Diagnostic Trouble Code 53

Internal Diagnostic Monitor Failure

Normal Operation

The diagnostic monitor performs several on-board diagnostics every time the ignition switch is turned on. If any of these tests fail, the diagnostic monitor will flash Diagnostic Trouble Code 53.

Possible Causes

1. Internal diagnostic monitor on-board diagnostic failure.

DIAGNOSTIC TROUBLE CODE 53

53-1 VERIFY CONDITION

• Turn key to ON.

• Count diagnostic trouble code.

• Is code 53 flashing?

GO to 53-2.

No
Read the normal operation description for this diagnostic trouble code. EXAMINE the diagnostic trouble code schematic and look for areas where intermittent conditions would occur (connectors, splices, crimps, etc.).
DO NOT proceed with Pinpoint Test until the code is flashing! Failure to do so will result in needless replacement of the air bag system components and repeat service.

 

53-2 DEACTIVATE SYSTEM

• Deactivate system.

None
REPLACE diagnostic monitor. RECONNECT system. VERIFY system. REACTIVATE system.

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