- MS bus circuit
- Certification ECU (smart key ECU assembly) branch wire or connector
- Position control ECU and switch branch wire or connector
- Outer mirror control ECU branch wire or connector
- Multiplex tilt and telescopic ECU branch wire or connector
- Tire pressure warning ECU branch wire or connector
- Power back door unit (power back door ECU) branch wire or connector*1
- Windshield wiper ECU branch wire or connector
- Bus buffer ECU branch wire or connector*2
- No. 2 main body ECU branch wire or connector
- Main body ECU (cowl side junction block LH) main wire or connector
- Combination meter main wire or connector
- Certification ECU (smart key ECU assembly)
- Position control ECU and switch assembly
- Outer mirror control ECU assembly
- Multiplex tilt and telescopic ECU
- Tire pressure warning ECU
- Power back door unit assembly (power back door ECU)*1
- Windshield wiper ECU
- Bus buffer ECU*2
- No. 2 main body ECU
- Main body ECU (cowl side junction block LH)
- Combination meter assembly
- No. 8 junction connector
- No. 9 junction connector
- No. 10 junction connector
- No. 2 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: RM000002MXM00FX |
| Title: NETWORKING: CAN COMMUNICATION SYSTEM: DESCRIPTION (2008 LX570) | ||
|
DTC |
U1002 (CAN MS BUS) |
Lost Communication with Gateway Module (Main body 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 MS BUS) |
Lost communication with the gateway module (main body ECU). |
|
*1: w/ Power Back Door System
*2: w/ LEXUS Link 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:
|
|
|
3. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 CAN JUNCTION CONNECTOR - MAIN BODY ECU) |
|
(a) Disconnect the L29 No. 2 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 |
|---|---|---|
|
L29-1 (CANH) - L29-2 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
4. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 CAN JUNCTION CONNECTOR - COMBINATION METER) |
|
(a) Disconnect the L30 No. 2 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 |
|---|---|---|
|
L30-1 (CANH) - L30-2 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
5. |
CONNECT CONNECTOR |
(a) Reconnect the L29 No. 2 CAN junction connector connector.
|
|
6. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 8 JUNCTION CONNECTOR - MAIN BODY ECU) |
|
(a) Disconnect the E76 No. 8 junction connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E76-6 (CANH) - E76-17 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
7. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 8 JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
|
8. |
CONNECT CONNECTOR |
(a) Reconnect the E76 No. 8 junction connector connector.
|
|
9. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (MAIN BODY ECU - NO. 8 JUNCTION CONNECTOR) |
|
(a) Disconnect the E3 main body ECU (cowl side junction block LH) connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E3-16 (CANP) - E3-15 (CANN) |
Engine switch off |
108 to 132 Ω |
|
|
10. |
CONNECT CONNECTOR |
(a) Reconnect the L29 and L30 No. 2 CAN junction connector connectors.
|
|
11. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 9 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR) |
|
(a) Disconnect the E70 No. 10 junction connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E70-1 (CANH) - E70-12 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
12. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 10 JUNCTION CONNECTOR - COMBINATION METER) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
|
13. |
CONNECT CONNECTOR |
(a) Reconnect the E70 No. 10 junction connector connector.
|
|
14. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (COMBINATION METER - NO. 10 JUNCTION CONNECTOR) |
|
(a) Disconnect the E77 combination meter connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E77-37 (MPX+) - E77-38 (MPX-) |
Engine switch off |
108 to 132 Ω |
|
|
15. |
CONNECT CONNECTOR |
(a) Reconnect the E70 No. 10 junction connector connector.
|
|
16. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 9 JUNCTION CONNECTOR - NO. 10 JUNCTION CONNECTOR) |
|
(a) Disconnect the E73 No. 9 junction connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E73-1 (CANH) - E73-12 (CANL) |
Engine switch off |
108 to 132 Ω |
|
|
17. |
CHECK FOR OPEN IN CAN BUS MAIN WIRE (NO. 2 CAN JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
|
18. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR SIDE) |
|
(a) Disconnect the E70 No. 10 junction connector connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E3-16 (CANP) - E3-15 (CANN) |
Engine switch off |
108 to 132 Ω |
|
E3-16 (CANP) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E3-15 (CANN) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E3-16 (CANP) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
E3-15 (CANN) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
|
19. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - COMBINATION METER) |
|
(a) Measure the resistance according to the value(s) in the table below.
|
|
|
20. |
CONNECT CONNECTOR |
(a) Reconnect the E70 No. 10 junction connector connector.
|
|
21. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 10 JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR) |
|
(a) Disconnect the E73 No. 9 junction connector connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E73-1 (CANH) - E73-12 (CANL) |
Engine switch off |
108 to 132 Ω |
|
E73-1 (CANH) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E73-12 (CANL) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E73-1 (CANH) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
E73-12 (CANL) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
|
22. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR SIDE) |
|
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
|
23. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR - BUS BUFFER ECU) |
NOTICE:
For vehicles without the LEXUS link system, go to "Check for Short in CAN Bus Wires (No. 9 Junction Connector - Windshield Wiper ECU)".
|
(a) Measure the resistance according to the value(s) in the table below.
|
|
|
24. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 9 JUNCTION CONNECTOR - WINDSHIELD WIPER ECU) |
|
(a) Measure the resistance according to the value(s) in the table below.
|
|
|
25. |
CONNECT CONNECTOR |
(a) Reconnect the E73 No. 9 junction connector connector.
|
|
26. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - NO. 9 JUNCTION CONNECTOR) |
|
(a) Disconnect the L30 No. 2 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 |
|---|---|---|
|
L30-1 (CANH) - L30-2 (CANL) |
Engine switch off |
108 to 132 Ω |
|
L30-1 (CANH) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
L30-2 (CANL) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
L30-1 (CANH) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
L30-2 (CANL) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
|
27. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR SIDE) |
(a) Disconnect the L29 No. 2 CAN junction connector connector.
|
|
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
|
28. |
CONNECT CONNECTOR |
(a) Reconnect the E73 No. 9 junction connector connector.
|
|
29. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - TIRE PRESSURE WARNING ECU) |
|
(a) Disconnect the L31 No. 2 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 |
|---|---|---|---|
|
L31-1 (CANH) - L31-2 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
L31-1 (CANH) - L31-2 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
L31-1 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L31-2 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L31-1 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L31-2 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L31-1 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L31-2 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L31-1 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
L31-2 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
30. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - POWER BACK DOOR UNIT) |
NOTICE:
For vehicles without the power back door system, go to "Check for Short in CAN Bus Wires (No. 2 CAN Junction Connector - No. 2 Main Body ECU)".
(a) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
L45-1 (CANH) - L45-2 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
L45-1 (CANH) - L45-2 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
L45-1 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L45-2 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L45-1 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L45-2 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L45-1 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L45-2 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L45-1 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
L45-2 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
31. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - NO. 2 MAIN BODY ECU) |
(a) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
L46-1 (CANH) - L46-2 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
L46-1 (CANH) - L46-2 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
L46-1 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L46-2 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L46-1 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L46-2 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L46-1 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L46-2 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L46-1 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
L46-2 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
32. |
CONNECT CONNECTOR |
(a) Reconnect the L29 and L30 No. 2 CAN junction connector connectors.
|
|
33. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 CAN JUNCTION CONNECTOR - NO. 8 JUNCTION CONNECTOR) |
|
(a) Disconnect the E76 No. 8 junction connector connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
E76-1 (CANH) - E76-12 (CANL) |
Engine switch off |
108 to 132 Ω |
|
E76-1 (CANH) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E76-12 (CANL) - E22-4 (CG) |
Engine switch off |
200 Ω or higher |
|
E76-1 (CANH) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
E76-12 (CANL) - E22-16 (BAT) |
Engine switch off |
6 kΩ or higher |
|
|
34. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - CERTIFICATION ECU) |
|
(a) Disconnect the E76 No. 8 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 |
|---|---|---|---|
|
E76-2 (CANH) - E76-13 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E76-2 (CANH) - E76-13 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E76-2 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E76-13 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E76-2 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E76-13 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E76-2 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E76-13 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E76-2 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E76-13 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
35. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - POSITION CONTROL ECU AND SWITCH) |
|
(a) Measure the resistance according to the value(s) in the table below.
|
|
|
36. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - MULTIPLEX TILT AND TELESCOPIC ECU) |
|
(a) Measure the resistance according to the value(s) in the table below.
|
|
|
37. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - OUTER MIRROR CONTROL ECU) |
|
(a) Measure the resistance according to the value(s) in the table below.
|
|
|
38. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 8 JUNCTION CONNECTOR - MAIN BODY ECU) |
|
(a) Measure the resistance according to the value(s) in the table below.
|
|
|
39. |
CONNECT CONNECTOR |
(a) Reconnect the E70 No. 10 junction connector connector.
|
|
40. |
CHECK FOR SHORT IN CAN BUS WIRES (COMBINATION METER) |
|
(a) Disconnect the E77 combination meter connector. |
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E77-37 (MPX+) - E77-38 (MPX-) |
Engine switch off |
1 Ω or higher |
OK |
|
E77-37 (MPX+) - E77-38 (MPX-) |
Engine switch off |
Below 1 Ω |
NG |
|
E77-37 (MPX+) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E77-38 (MPX-) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E77-37 (MPX+) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E77-38 (MPX-) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E77-37 (MPX+) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E77-38 (MPX-) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E77-37 (MPX+) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E77-38 (MPX-) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
41. |
CONNECT CONNECTOR |
(a) Reconnect the E73 No. 9 junction connector connector.
|
|
42. |
CHECK FOR SHORT IN CAN BUS WIRES (BUS BUFFER ECU) |
(a) Disconnect the P5 bus buffer ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
P5-1 (CANP) - P5-2 (CANN) |
Engine switch off |
1 Ω or higher |
OK |
|
P5-1 (CANP) - P5-2 (CANN) |
Engine switch off |
Below 1 Ω |
NG |
|
P5-1 (CANP) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
P5-2 (CANN) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
P5-1 (CANP) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
P5-2 (CANN) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
P5-1 (CANP) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
P5-2 (CANN) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
P5-1 (CANP) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
P5-2 (CANN) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
43. |
CONNECT CONNECTOR |
(a) Reconnect the E73 No. 9 junction connector connector.
|
|
44. |
CHECK FOR SHORT IN CAN BUS WIRES (WINDSHIELD WIPER ECU) |
|
(a) Disconnect the E90 windshield wiper ECU connector. |
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E90-6 (CANH) - E90-5 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E90-6 (CANH) - E90-5 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E90-6 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E90-5 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E90-6 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E90-5 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E90-6 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E90-5 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E90-6 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E90-5 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
45. |
CONNECT CONNECTOR |
(a) Reconnect the E73 No. 9 junction connector connector.
|
|
46. |
CHECK FOR SHORT IN CAN BUS WIRES (TIRE PRESSURE WARNING ECU) |
|
(a) Disconnect the L10 tire pressure warning ECU connector. |
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
L10-6 (CANP) - L10-12 (CANN) |
Engine switch off |
1 Ω or higher |
OK |
|
L10-6 (CANP) - L10-12 (CANN) |
Engine switch off |
Below 1 Ω |
NG |
|
L10-6 (CANP) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L10-12 (CANN) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L10-6 (CANP) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L10-12 (CANN) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L10-6 (CANP) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L10-12 (CANN) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L10-6 (CANP) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
L10-12 (CANN) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
47. |
CONNECT CONNECTOR |
(a) Reconnect the E73 No. 9 junction connector connector.
|
|
48. |
CHECK FOR SHORT IN CAN BUS WIRES (POWER BACK DOOR UNIT) |
(a) Disconnect the L36 power back door unit (power back door ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
L36-6 (MPX1) - L36-5 (MPX2) |
Engine switch off |
1 Ω or higher |
OK |
|
L36-6 (MPX1) - L36-5 (MPX2) |
Engine switch off |
Below 1 Ω |
NG |
|
L36-6 (MPX1) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L36-5 (MPX2) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L36-6 (MPX1) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L36-5 (MPX2) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L36-6 (MPX1) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L36-5 (MPX2) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L36-6 (MPX1) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
L36-5 (MPX2) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
49. |
CONNECT CONNECTOR |
(a) Reconnect the E73 No. 9 junction connector connector.
|
|
50. |
CHECK FOR SHORT IN CAN BUS WIRES (NO. 2 MAIN BODY ECU) |
(a) Disconnect the L33 No. 2 main body ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
L33-11 (MPX+) - L33-12 (MPX-) |
Engine switch off |
1 Ω or higher |
OK |
|
L33-11 (MPX+) - L33-12 (MPX-) |
Engine switch off |
Below 1 Ω |
NG |
|
L33-11 (MPX+) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L33-12 (MPX-) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
L33-11 (MPX+) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L33-12 (MPX-) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
L33-11 (MPX+) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L33-12 (MPX-) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
L33-11 (MPX+) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
L33-12 (MPX-) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
51. |
CONNECT CONNECTOR |
(a) Reconnect the E76 No. 8 junction connector connector.
|
|
52. |
CHECK FOR SHORT IN CAN BUS WIRES (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) |
|
(a) Disconnect the E29 certification ECU (smart key ECU) connector. |
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E29-27 (CANH) - E29-28 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
E29-27 (CANH) - E29-28 (CANL) |
Engine switch off |
Below 1 Ω |
NG |
|
E29-27 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E29-28 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E29-27 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E29-28 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E29-27 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E29-28 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E29-27 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E29-28 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
53. |
CONNECT CONNECTOR |
(a) Reconnect the E76 No. 8 junction connector connector.
|
|
54. |
CHECK FOR SHORT IN CAN BUS WIRES (POSITION CONTROL ECU AND SWITCH) |
|
(a) Disconnect the c15 position control ECU and switch connector. |
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
c15-5 (MPX1) - c15-1 (MPX2) |
Engine switch off |
1 Ω or higher |
OK |
|
c15-5 (MPX1) - c15-1 (MPX2) |
Engine switch off |
Below 1 Ω |
NG |
|
c15-5 (MPX1) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
c15-1 (MPX2) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
c15-5 (MPX1) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
c15-1 (MPX2) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
c15-5 (MPX1) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
c15-1 (MPX2) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
c15-5 (MPX1) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
c15-1 (MPX2) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
55. |
CONNECT CONNECTOR |
(a) Reconnect the E76 No. 8 junction connector connector.
|
|
56. |
CHECK FOR SHORT IN CAN BUS WIRES (MULTIPLEX TILT AND TELESCOPIC ECU) |
|
(a) Disconnect the E27 multiplex tilt and telescopic ECU connector. |
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E27-5 (CANP) - E27-14 (CANN) |
Engine switch off |
1 Ω or higher |
OK |
|
E27-5 (CANP) - E27-14 (CANN) |
Engine switch off |
Below 1 Ω |
NG |
|
E27-5 (CANP) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E27-14 (CANN) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E27-5 (CANP) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E27-14 (CANN) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E27-5 (CANP) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E27-14 (CANN) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E27-5 (CANP) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E27-14 (CANN) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
57. |
CONNECT CONNECTOR |
(a) Reconnect the E76 No. 8 junction connector connector.
|
|
58. |
CHECK FOR SHORT IN CAN BUS WIRES (OUTER MIRROR CONTROL ECU) |
|
(a) Disconnect the I18 outer mirror 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 |
|---|---|---|---|
|
I18-1 (CANH) - I18-21 (CANL) |
Engine switch off |
1 Ω or higher |
OK |
|
I18-1 (CANH) - I18-21 (CANHL) |
Engine switch off |
Below 1 Ω |
NG |
|
I18-1 (CANH) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
I18-21 (CANL) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
I18-1 (CANH) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
I18-21 (CANL) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
I18-1 (CANH) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
I18-21 (CANL) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
I18-1 (CANH) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
I18-21 (CANL) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
59. |
CONNECT CONNECTOR |
(a) Reconnect the E76 No. 8 junction connector connector.
|
|
60. |
CHECK FOR SHORT IN CAN BUS WIRES (MAIN BODY ECU) |
|
(a) Disconnect the E3 main body ECU (cowl side junction block LH) connector. |
(b) Measure the resistance according to the value(s) in the table below.
Result
|
Tester Connection |
Switch Condition |
Measured Resistance |
Proceed to |
|---|---|---|---|
|
E3-16 (CANP) - E3-15 (CANN) |
Engine switch off |
1 Ω or higher |
OK |
|
E3-16 (CANP) - E3-15 (CANN) |
Engine switch off |
Below 1 Ω |
NG |
|
E3-16 (CANP) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E3-15 (CANN) - E22-4 (CG) |
Engine switch off |
1 Ω or higher |
OK |
|
E3-16 (CANP) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E3-15 (CANN) - E22-4 (CG) |
Engine switch off |
Below 1 Ω |
NG |
|
E3-16 (CANP) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E3-15 (CANN) - E22-16 (BAT) |
Engine switch off |
1 Ω or higher |
OK |
|
E3-16 (CANP) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
E3-15 (CANN) - E22-16 (BAT) |
Engine switch off |
Below 1 Ω |
NG |
|
|
61. |
CHECK HARNESS AND CONNECTOR (MAIN BODY 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 2A, 2D and E3 main body ECU (cowl side junction block LH) connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2D-62 (GND2) - Body ground |
Always |
Below 1 Ω |
|
E3-1 (GND3) - Body ground |
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2A-1 (ALTB) - Body ground |
Always |
11 to 14 V |
|
|
|