HC7 Checking Wiring Harness (Circuit 421)

^ The next steps in determining why the air suspension control module could not activate the vent solenoid valve are:

^ Turn air suspension switch to OFF position.

^ Disconnect air suspension control module connector.

^ Disconnect air compressor assembly electrical connector.

^ Using an analog ohmmeter, connect one lead to air suspension control module wiring harness connector Pin 42 (Circuit 421) and other to Pin 40 (Circuit 430G).

^ Is ohmmeter reading greater than 10,000 ohms?

YES -- GO to HC8.

NO -- SERVICE short to ground in wiring harness Circuit 421. REPEAT Service Bay Diagnostics. Reading and Clearing Diagnostic Trouble Codes