TERMINALS OF ECU
System information
| CHECK POWER BACK DOOR ECU |
Disconnect the P10 and P11 ECU connectors and measure the voltage and resistance according to the value(s) in the table below.
- Standard voltage and resistance:
Symbols
(Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
ECUB (P10-10) - Body ground
BR - Body ground
ECU (ECUB) power supply
Constant
10 to 14 V
B (P11-2) - Body ground
Y - Body ground
+B (ECUB) power supply
Constant
10 to 14 V
GND (P11-8) - Body ground
W-B - Body ground
Ground
Constant
Below 1 Ω
IG (P10-9) - Body ground
GR - Body ground
Ignition switch input
Ignition switch
OFF → ON
Below 1 V → 10 to 14 V
CTYE (P10-7) - Body ground
P - Body ground
Back door courtesy switch input
Back door
CLOSED → OPEN
10 kΩ or higher → Below 1 Ω
CTYO (P10-19) - Body ground
BR - Body ground
Back door courtesy switch output
Back door
CLOSED → OPEN
10 kΩ or higher → Below 1 Ω
- HINT:
- If the result is not as specified, there may be a malfunction on the wire harness side.
Reconnect the ECU connectors and measure the voltage according to the value(s) in the table below.
- Standard voltage:
Symbols
(Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
POS (P10-21) - Body ground
LG - Body ground
Back door lock position switch input
Back door OPEN →
Closer in operation →
CLOSED
Below 1 V →
10 to 14 V →
Below 1 V
FUL (P10-18) - Body ground
V - Body ground
Back door lock full-latch switch input
Back door CLOSED →
OPEN
10 to 14 V →
Below 1 V
HAF (P10-8) - Body ground
R - Body ground
Back door lock half-latch switch input
Back door OPEN →
Closer in operation →
CLOSED
Below 1 V →
10 to 14 V →
Below 1 V
DC+ (P10-12) - Body ground
G - Body ground
Back door lock closer motor drive output (Close)
Back door OPEN →
Not completely closed →
Motor in normal rotation →
Motor in reverse rotation →
Operation completed (Back door CLOSED)
Below 1 V →
Below 1 V →
10 to 14 V →
Below 1 V →
Below 1 V
DC- (P10-11) - Body ground
B - Body ground
Back door lock closer motor drive output (Release)
Back door OPEN →
Not completely closed →
Motor in normal rotation →
Motor in reverse rotation →
Operation completed (Back door CLOSED)
Below 1 V →
Below 1 V →
Below 1 V →
10 to 14 V →
Below 1 V
- HINT:
- If the result is not as specified, the ECU may have a malfunction.
| CHECK INSTRUMENT PANEL J/B ASSEMBLY (BODY ECU) |
Disconnect the 1A, 1D, 1F, 1M and B7 connectors.
Measure the voltage and resistance according to the value(s) in the table below.
- Standard voltage and resistance:
Symbols
(Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
BECU (1D-10) - Body ground
W - Body ground
+B (BECU) power supply
Constant
10 to 14 V
ALTB (1D-16) - Body ground
W - Body ground
+B (power system, generator system) power supply
Constant
10 to 14 V
BATB (1A-1) - Body ground
B - Body ground
+B (power system, battery system) power supply
Constant
10 to 14 V
GND1 (1F-10) - Body ground
W-B - Body ground
Ground
Constant
Below 1 Ω
GND2 (1M-9) - Body ground
W-B - Body ground
Ground
Constant
Below 1 Ω
BCTY (B7-25) - Body ground
P - Body ground
Back door courtesy switch input
Back door
CLOSED → OPEN
10 kΩ or higher → Below 1 Ω
- HINT:
- If the result is not as specified, there may be a malfunction on the wire harness side.