DTC Detection Logic

DTC

Display item

Malfunction detected condition

Possible cause

C1802

AIR SUS COMPRS RELAY

• Output voltage of the air compressor relay remains 9 V or less continuously for 5 seconds during air compressor ON signal output by the air levelizer control module.
• Output voltage of the air compressor relay remains 2 V or more continuously for 10 seconds during air compressor OFF signal output by the air levelizer control module.

• Harness or connector
• Air compressor relay
• Air levelizer control module