B261B

DTC Logic


DTC DETECTION LOGIC

NOTE:
- If DTC B261B is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
"DTC Logic" Body Control System.
- If DTC B261B is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
"DTC Logic" Body Control System.







Diagnosis Procedure


1. CHECK ECM IGNITION, POWER AND GROUND CIRCUITS

Check ECM ignition power and ground circuits. Refer to "Diagnosis Procedure" Power Supply And Ground Circuit (with QR25DE) or
"Diagnosis Procedure" Power Supply And Ground Circuit (with VQ35DE) .
Is the inspection result normal?
YES- Replace ECM. Refer to "Removal and Installation" Service and Repair (with QR25DE) or "Removal and Installation" Service and Repair (with VQ35DE). GO TO 2.
NO- Repair or replace harness or connectors.

2. INSPECTION

1.Turn ignition switch ON.
2.Select "Self-diagnostic result" mode with CONSULT.
3.Touch "ERASE".
4.Perform vehicle remote start operation.
Does DTC B261B return?
YES- Replace BCM. Refer to "Removal and Installation" Service and Repair.
NO- Inspection End.