DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT FUSE (AM2)
CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND)
CHECK RESISTANCE OF COMMUNICATION LINE
DESCRIPTION
- HINT:
- This DTC is only output on vehicles equipped with a smart access with push-button start.
- This DTC is detected when communication between the power source control ECU stops for more than 10 seconds.
DTC No.
| DTC Detection Condition
| Trouble Area
|
B1210
| Power source control ECU communication stops
| - Power source control ECU
- Wire harness
|
WIRING DIAGRAM
INSPECTION PROCEDURE
Remove the AM2 fuse from the cowl side junction block RH.
Measure the resistance of the fuse.
- Standard resistance:
- Below 1 Ω
| 2.CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) |
Disconnect the L73 ECU connector.
Measure the resistance and voltage of the wire harness side connector.
- Standard voltage:
Tester Connection
| Specified Condition
|
L73-33 (AM1) - Body ground
| 10 to 14 V
|
L73-12 (AM2) - Body ground
|
- Standard resistance:
Tester Connection
| Specified Condition
|
L73-6 (GND2) - Body ground
| Below 1 Ω
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| 3.CHECK RESISTANCE OF COMMUNICATION LINE |
Disconnect the L66 and L73 ECU connectors.
Disconnect the Y6 junction block connector.
Disconnect the S5 switch connector.
Measure the resistance of the wire harness side connectors.
- Standard resistance:
Tester Connection
| Specified Condition
|
L73-7 (MPX1) - Y6-14 (MPX)
| Below 1 Ω
|
L73-7 (MPX1) - S5-7 (MPX1)
|
L73-24 (MPX2) - L66-3 (MPD1)
|
- Result:
Result
| Proceed to
|
All are OK
| A
|
One or to is / are OK
| B
|
All are NG
| C
|
| | REPLACE POWER SOURCE CONTROL ECU AND HARNESS AND CONNECTOR |
|
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| A |
|
|
|
| REPLACE POWER SOURCE CONTROL ECU |
|
