- Movement control bus circuit
- 4WD control ECU branch wire or connector
- Yaw rate sensor branch wire or connector
- Seat belt control ECU branch wire or connector*1
- Distance control ECU branch wire or connector*1
- Parking assist ECU branch wire or connector*2
- Master cylinder solenoid (skid control ECU) branch wire or connector
- Steering angle sensor branch wire or connector
- Network gateway ECU main wire or connector
- Suspension control ECU branch wire or connector
- Steering control ECU branch wire or connector
- 4WD control ECU
- Yaw rate sensor
- Seat belt control ECU*1
- Distance control ECU*1
- Parking assist ECU*2
- Master cylinder solenoid (skid control ECU)
- Steering angle sensor
- Suspension control ECU
- Steering control ECU
- Network gateway ECU
- No. 4 junction connector
- No. 5 junction connector
- No. 6 junction connector
- No. 7 junction connector
- No. 1 CAN junction connector
| Last Modified: 11-27-2007 | 1.6 C | |
| Service Category: Power Source/Network | Section: Networking | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000003A9U005X |
| Title: NETWORKING: CAN COMMUNICATION SYSTEM: DESCRIPTION (2008 LX570) | ||
|
DTC |
U1002 (CAN No. 2 BUS) |
Lost Communication with Gateway Module (Network Gateway ECU) |
DESCRIPTION
If 2 or more DTCs are output during the DTC check, one side of the CAN branch wire may be open (one side of the CANH [branch wire]/CANL [branch wire] of the ECU and/or sensor is open).
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
U1002 (CAN No. 2 BUS) |
Lost communication with the gateway module (network gateway ECU). |
|
*1: w/ Dynamic Radar Cruise Control System
*2: w/ Wide View Front and Side Monitor System
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL |
(a) Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and the branch wire.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
NOTICE:
-
w/ Navigation System:
After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
-
When disconnecting the cable, some systems need to be initialized after the cable is reconnected
.
|
|
2. |
CHECK CAN BUS WIRE (MAIN WIRE FOR DISCONNECTION, BUS LINE FOR SHORT CIRCUIT) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
Resistance Malfunction |
|---|---|---|---|
|
E31-13 (CA2H) - E31-12 (CA2L) |
Engine switch off |
54 to 69 Ω |
Below 53 Ω: Short in line |
|
70 Ω or higher: Open in CAN main bus line |
|||
|
E31-13 (CA2H) - E31-2 (BATT) |
Engine switch off |
6 kΩ or higher |
Below 6 kΩ: +B short |
|
E31-12 (CA2L) - E31-2 (BATT) |
Engine switch off |
6 kΩ or higher |
Below 6 kΩ: +B short |
|
E31-13 (CA2H) - E31-4 (GND) |
Engine switch off |
200 Ω or higher |
Below 200 Ω: Ground short |
|
E31-12 (CA2L) - E31-4 (GND) |
Engine switch off |
200 Ω or higher |
Below 200 Ω: Ground short |
Result
|
Result |
Proceed to |
|---|---|
|
NG - Open in CAN main bus line |
A |
|
NG - Short in line - +B short - Ground short |
B |
|
OK |
C |
|
|
3. |
CHECK FOR OPEN IN MAIN BUS WIRE (NO. 7 CAN JUNCTION CONNECTOR - NETWORK GATEWAY ECU) |
(a) Disconnect the E74 No. 7 junction connector connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E74-2 (CANH) - E74-13 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
4. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 7 JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E74-1 (CANH) - E74-12 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
5. |
CONNECT CONNECTOR |
(a) Reconnect the E74 No. 7 junction connector connector.
|
|
6. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 6 JUNCTION CONNECTOR - NO. 7 JUNCTION BLOCK) |
(a) Disconnect the F21 No. 6 junction connector connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
F21-2 (CANH) - F21-13 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
7. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 6 JUNCTION CONNECTOR - NETWORK GATEWAY ECU) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
F21-3 (CANH) - F21-14 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
8. |
CONNECT CONNECTOR |
(a) Reconnect the F21 No. 6 junction connector connector.
|
|
9. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 5 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR) |
(a) Disconnect the E68 No. 5 junction connector connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E68-2 (CANH) - E68-13 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
10. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 5 JUNCTION CONNECTOR - NETWORK GATEWAY ECU) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E68-1 (CANH) - E68-12 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
11. |
CONNECT CONNECTOR |
(a) Reconnect the E68 No. 5 junction connector connector.
|
|
12. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR) |
(a) Disconnect the E71 No. 4 junction connector connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E71-1 (CANH) - E71-12 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
13. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 4 JUNCTION CONNECTOR - NETWORK GATEWAY ECU) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E71-2 (CANH) - E71-13 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
14. |
CONNECT CONNECTOR |
(a) Reconnect the E74 No. 7 junction connector connector.
|
|
15. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 1 CAN JUNCTION CONNECTOR - NO. 7 JUNCTION CONNECTOR) |
(a) Disconnect the K29 No. 1 CAN junction connector connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
K29-1 (CANH) - K29-2 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
16. |
CONNECT CONNECTOR |
(a) Reconnect the E71 No. 4 junction connector connector.
|
|
17. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NETWORK GATEWAY ECU - NO. 4 JUNCTION CONNECTOR) |
(a) Disconnect the E31 network gateway ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E31-13 (CA2H) - E31-12 (CA2L) |
Engine switch off |
108 to 132 Ω |
|
|
18. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR SIDE) |
(a) Disconnect the E74 No. 7 junction connector connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E31-13 (CA2H) - E31-12 (CA2L) |
Engine switch off |
108 to 132 Ω |
|
E31-13 (CA2H) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E31-12 (CA2L) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E31-13 (CA2H) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
E31-12 (CA2L) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
|
19. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - STEERING CONTROL ECU) |
|
(a) Measure the resistance according to the value(s) in the table below.
|
|
|
20. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - STEERING ANGLE SENSOR) |
(a) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E74-4 (CANH) - E74-15 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-4 (CANH) - E74-15 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-4 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-15 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-4 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-15 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-4 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-15 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-4 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-15 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
21. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - SKID CONTROL ECU) |
(a) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E74-5 (CANH) - E74-16 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-5 (CANH) - E74-16 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-5 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-16 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-5 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-16 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-5 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-16 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-5 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-16 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
22. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) |
(a) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Result |
|---|---|---|---|
|
E74-1 (CANH) - E74-12 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-1 (CANH) - E74-12 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-1 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-12 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-1 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-12 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-1 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-12 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E74-1 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E74-12 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
23. |
CONNECT CONNECTOR |
(a) Reconnect the E74 No. 7 junction connector connector.
|
|
24. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 7 JUNCTION CONNECTOR - NO. 6 JUNCTION CONNECTOR) |
(a) Disconnect the F21 No. 6 junction connector connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
F21-2 (CANH) - F21-13 (CANL) |
Engine switch off |
108 to 132 Ω |
|
F21-2 (CANH) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
F21-13 (CANL) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
F21-2 (CANH) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
F21-13 (CANL) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
|
25. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR SIDE) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E31-13 (CA2H) - E31-12 (CA2L) |
Engine switch off |
108 to 132 Ω |
|
E31-13 (CA2H) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E31-12 (CA2L) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E31-13 (CA2H) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
E31-12 (CA2L) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
Result
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (w/ Wide View Front and Side Monitor System) |
B |
|
NG (w/o Wide View Front and Side Monitor System) |
C |
|
|
26. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR - PARKING ASSIST ECU) |
|
(a) Measure the resistance according to the value(s) in the table below.
|
|
|
27. |
CONNECT CONNECTOR |
(a) Reconnect the F21 No. 6 junction connector connector.
|
|
28. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 6 JUNCTION CONNECTOR - NO. 5 JUNCTION CONNECTOR) |
(a) Disconnect the E68 No. 5 junction connector connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E68-2 (CANH) - E68-13 (CANL) |
Engine switch off |
108 to 132 Ω |
|
E68-2 (CANH) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E68-13 (CANL) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E68-2 (CANH) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
E68-13 (CANL) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
|
29. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR SIDE) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E31-13 (CA2H) - E31-12 (CA2L) |
Engine switch off |
108 to 132 Ω |
|
E31-13 (CA2H) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E31-12 (CA2L) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E31-13 (CA2H) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
E31-12 (CA2L) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
|
30. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - SEAT BELT CONTROL ECU) |
NOTICE:
For vehicles without the dynamic radar cruise control system, go to "Check for Short in CAN Bus Wires (No. 5 Junction Connector - Yaw Rate Sensor)".
|
(a) Measure the resistance according to the value(s) in the table below.
|
|
|
31. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - DISTANCE CONTROL ECU) |
(a) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E68-4 (CANH) - E68-15 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E68-4 (CANH) - E68-15 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E68-4 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E68-15 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E68-4 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E68-15 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E68-4 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E68-15 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E68-4 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E68-15 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
32. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - YAW RATE SENSOR) |
(a) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E68-3 (CANH) - E68-14 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E68-3 (CANH) - E68-14 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E68-3 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E68-14 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E68-3 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E68-14 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E68-3 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E68-14 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E68-3 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E68-14 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
33. |
CONNECT CONNECTOR |
(a) Reconnect the E68 No. 5 junction connector connector.
|
|
34. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 5 JUNCTION CONNECTOR - NO. 4 JUNCTION CONNECTOR) |
(a) Disconnect the E71 No. 4 junction connector connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E71-1 (CANH) - E71-12 (CANL) |
Engine switch off |
108 to 132 Ω |
|
E71-1 (CANH) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E71-12 (CANL) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E71-1 (CANH) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
E71-12 (CANL) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
|
35. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - 4WD CONTROL ECU) |
(a) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E71-3 (CANH) - E71-14 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E71-3 (CANH) - E71-14 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E71-3 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E71-14 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E71-3 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E71-14 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E71-3 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E71-14 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E71-3 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E71-14 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
36. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 4 JUNCTION CONNECTOR - NETWORK GATEWAY ECU) |
(a) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E71-2 (CANH) - E71-13 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E71-2 (CANH) - E71-13 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E71-2 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E71-13 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E71-2 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E71-13 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E71-2 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E71-13 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E71-2 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E71-13 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
37. |
CONNECT CONNECTOR |
(a) Reconnect the E74 No. 7 junction connector connector.
|
|
38. |
CHECK FOR SHORT IN CAN BUS WIRES (STEERING CONTROL ECU) |
|
(a) Disconnect the E84 steering control ECU connector. |
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E84-9 (CANH) - E84-20 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E84-9 (CANH) - E84-20 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E84-9 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E84-20 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E84-9 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E84-20 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E84-9 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E84-20 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E84-9 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E84-20 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
39. |
CONNECT CONNECTOR |
(a) Reconnect the E74 No. 7 junction connector connector.
|
|
40. |
CHECK FOR SHORT IN CAN BUS WIRES (STEERING ANGLE SENSOR) |
(a) Disconnect the E11 steering angle sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E11-10 (CANH) - E11-9 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E11-10 (CANH) - E11-9 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E11-10 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E11-9 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E11-10 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E11-9 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E11-10 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E11-9 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E11-10 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E11-9 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
41. |
CONNECT CONNECTOR |
(a) Reconnect the E74 No. 7 junction connector connector.
|
|
42. |
CHECK FOR SHORT IN CAN BUS WIRES (SKID CONTROL ECU) |
(a) Disconnect the A24 master cylinder solenoid (skid control ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
A24-11 (CANH) - A24-25 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
A24-11 (CANH) - A24-25 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
A24-11 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
A24-25 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
A24-11 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
A24-25 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
A24-11 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
A24-25 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
A24-11 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
A24-25 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
43. |
CONNECT CONNECTOR |
(a) Reconnect the E74 No. 7 junction connector connector.
|
|
44. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION CONNECTOR - SUSPENSION CONTROL ECU) |
(a) Disconnect the K41 No. 1 CAN junction connector connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
K41-1 (CANH) - K41-2 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
K41-1 (CANH) - K41-2 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
K41-1 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
K41-2 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
K41-1 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
K41-2 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
K41-1 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
K41-2 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
K41-1 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
K41-2 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
45. |
CONNECT CONNECTOR |
(a) Reconnect the E74 No. 7 junction connector connector.
|
|
46. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 1 CAN JUNCTION CONNECTOR) |
(a) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
K29-1 (CANH) - K29-2 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
K29-1 (CANH) - K29-2 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
K29-1 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
K29-2 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
K29-1 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
K29-2 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
K29-1 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
K29-2 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
K29-1 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
K29-2 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
47. |
CHECK FOR SHORT IN CAN BUS WIRES (SUSPENSION CONTROL ECU) |
|
(a) Disconnect the F38 suspension control ECU connector. |
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
F38-7 (CANH) - F38-8 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
F38-7 (CANH) - F38-8 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
F38-7 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
F38-8 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
F38-7 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
F38-8 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
F38-7 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
F38-8 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
F38-7 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
F38-8 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
48. |
CONNECT CONNECTOR |
(a) Reconnect the F21 No. 6 junction connector connector.
|
|
49. |
CHECK FOR SHORT IN CAN BUS WIRES (PARKING ASSIST ECU) |
|
(a) Disconnect the F36 parking assist ECU connector. |
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
F36-9 (CANH) - F36-10 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
F36-9 (CANH) - F36-10 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
F36-9 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
F36-10 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
F36-9 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
F36-10 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
F36-9 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
F36-10 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
F36-9 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
F36-10 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
50. |
CONNECT CONNECTOR |
(a) Reconnect the E68 No. 5 junction connector connector.
|
|
51. |
CHECK FOR SHORT IN CAN BUS WIRES (SEAT BELT CONTROL ECU) |
(a) Disconnect the E42 seat belt control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E42-1 (CANH) - E42-2 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E42-1 (CANH) - E42-2 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E42-1 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E42-2 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E42-1 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E42-2 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E42-1 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E42-2 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E42-1 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E42-2 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
52. |
CONNECT CONNECTOR |
(a) Reconnect the E68 No. 5 junction connector connector.
|
|
53. |
CHECK FOR SHORT IN CAN BUS WIRES (DISTANCE CONTROL ECU) |
(a) Disconnect the E86 distance control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E86-8 (CANH) - E86-9 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E86-8 (CANH) - E86-9 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E86-8 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E86-9 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E86-8 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E86-9 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E86-8 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E86-9 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E86-8 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E86-9 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
54. |
CONNECT CONNECTOR |
(a) Reconnect the E68 No. 5 junction connector connector.
|
|
55. |
CHECK FOR SHORT IN CAN BUS WIRES (YAW RATE SENSOR) |
(a) Disconnect the E50 yaw rate sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E50-3 (CANH) - E50-2 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E50-3 (CANH) - E50-2 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E50-3 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E50-2 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E50-3 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E50-2 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E50-3 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E50-2 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E50-3 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E50-2 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
56. |
CONNECT CONNECTOR |
(a) Reconnect the E71 No. 4 junction connector connector.
|
|
57. |
CHECK FOR SHORT IN CAN BUS WIRES (4WD CONTROL ECU) |
(a) Disconnect the A27 4WD control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
A27-19 (CAN+) - A27-20 (CAN-) |
Engine switch off |
1 Ω or higher |
OK |
|
A27-19 (CAN+) - A27-20 (CAN-) |
Engine switch off |
Below 1 Ω |
NG |
|
A27-19 (CAN+) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
A27-20 (CAN-) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
A27-19 (CAN+) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
A27-20 (CAN-) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
A27-19 (CAN+) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
A29-20 (CAN-) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
A27-19 (CAN+) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
A27-20 (CAN-) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
58. |
CONNECT CONNECTOR |
(a) Reconnect the E71 No. 4 junction connector connector.
|
|
59. |
CHECK FOR SHORT IN CAN BUS WIRES (NETWORK GATEWAY ECU) |
(a) Disconnect the E31 network gateway ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E31-13 (CA2H) - E31-12 (CA2L) |
Engine switch off |
1 Ω or higher |
OK |
|
E31-13 (CA2H) - E31-12 (CA2L) |
Engine switch off |
Below 1 Ω |
NG |
|
E31-13 (CA2H) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E31-12 (CA2L) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E31-13 (CA2H) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E31-12 (CA2L) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E31-13 (CA2H) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E31-12 (CA2L) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E31-13 (CA2H) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E31-12 (CA2L) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
60. |
CHECK HARNESS AND CONNECTOR (NETWORK GATEWAY ECU - BATTERY AND BODY GROUND) |
(a) Connect the cable to the negative (-) battery terminal.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected
.
|
(b) Disconnect the E31 network gateway ECU connector. |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E31-4 (GND) - Body ground |
Engine switch off |
1 Ω or higher |
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E31-2 (BATT) - Body ground |
Always |
11 to 14 V |
|
E31-9 (IG2) - Body ground |
Engine switch on (IG) |
11 to 14 V |
|
E31-10 (IG1) - Body ground |
Engine switch on (IG) |
11 to 14 V |
|
|
|