Air Dryer and Moisture Ejector Inoperative. Chevrolet Chevrolet C-Series Medium Duty Truck B7 2002

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2002 🢒 Chevrolet C-Series Medium Duty Truck B7 🢒 Brakes 🢒 Air Brakes 🢒 Air Dryer and Moisture Ejector Inoperative

Step	Action	Yes	No
1	Turn the ignition switch to RUN Backprobe the air dryer with a test lamp from terminal A to chassis ground. Did the test lamp light?	Go to Step 2	Go to Step 3
2	Repair the open in CKT 150 (BLK) between terminal B of the components and G404. Do both the air dryer and the moisture ejector heater operate?	System OK	--
3	Repair the open in CKT 341 (BRN), CKT 139, or CKT 145 (PNK) between the IP fuse block and terminal A of the components. Do both the air dryer and the moisture ejector heater operate?	System OK	--

Step

Action

Yes

Did the test lamp light?

Repair the open in CKT 150 (BLK) between terminal B of the components and G404.

Do both the air dryer and the moisture ejector heater operate?

System OK

Repair the open in CKT 341 (BRN), CKT 139, or CKT 145 (PNK) between the IP fuse block and terminal A of the components.

Do both the air dryer and the moisture ejector heater operate?

System OK