B1342

Pinpoint Test 12: LFC 24/DTC B1342 - RCM Internal Fault

Normal Operation
The restraints control module (RCM) monitors the backup power supply, accelerometer operation and memory. If the RCM detects a failure in any of these components, it will store a diagnostic trouble code (DTC) B1342 in memory and flash a lamp fault code (LFC) 24 on the air bag indicator.

Possible Causes
An RCM internal fault can be caused by:
- the backup power supply not operating correctly.
- an internal module circuit fault detected.
- a microcontroller RAM/ROM/EEPROM failure.

Step 1 - 2:

TEST DESCRIPTION