FC8 Checking Wiring Harness (Circuit 427)

FC8 CHECKING WIRING HARNESS (CIRCUIT 427)

^ Turn air suspension switch to OFF position.

^ Disconnect air suspension control module connector.

^ Using an analog ohmmeter, connect one lead to air suspension control module wiring harness connector Pin 5, Circuit 427 and other to Circuit 427 of rear height sensor vehicle wiring harness connector.

^ Is ohmmeter reading less than 5 ohms?

YES -- Turn air suspension switch to OFF position. REPLACE air suspension control module. RECONNECT rear height sensor. REPEAT Service Day Diagnostics.

NO -- Rear height sensor channel "A" Circuit 427 resistance is above acceptable limits. RECONNECT rear height sensor and REPEAT Service Bay Diagnostics after service is made.