B1242

DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM: B1242: Wireless Door Lock Tuner Circuit Malfunction

DTC B1242 - Wireless Door Lock Tuner Circuit Malfunction

DESCRIPTION

This DTC is output when a ground short is detected in terminal RDA or PRG.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DOOR CONTROL RECEIVER
(a) Check that the wireless system when a new or normal door control receiver is installed.
(b) Check that no DTC is output.
OK -- REPLACE DOOR CONTROL RECEIVER

NG -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (DOOR CONTROL RECEIVER - BODY ECU)




(a) Disconnect the D7 receiver connector.
(b) Disconnect the B5 J/B connector.
(c) Check the continuity between the wire harness side connectors.
Standard resistance:





(d) Check the continuity between the D7 receiver connector B5 J/B connector and body ground.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY