B: LFC 24/DTC B1342 - ECS Module Internal Fault

Normal Operation
The air bag Electronic Crash Sensor (ECS) module monitors the back-up power supply, accelerometer operation and memory. If the ECS 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 ECS module internal fault could be caused by:
- the internal accelerometer not operating correctly.
- the back-up power supply not operating correctly.
- an internal module circuit fault detected.
- a micro controller RAM/ROM/EEPROM failure.

Pinpoint Test Steps:

B1-B2: