The number(s) below refer to the step number(s) on the diagnostic table.
Step | Action | Yes | No |
---|---|---|---|
SCHEMATIC REFERENCE: Defogger Schematics | |||
1 | Did you perform the Defogger Diagnostic System Check? | Go to Step 2 | |
2 |
Does the test lamp illuminate? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Inspect the RR DEFOG fuse for an open. Is the fuse open? | Go to Step 16 | Go to Step 4 |
4 |
Does the rear defogger relay parameter display ON? | Go to Step 5 | Go to Step 22 |
Do you hear a click when you command the rear defogger relay ON and OFF? | Go to Step 8 | Go to Step 6 | |
6 |
Does the test lamp illuminate? | Go to Step 7 | Go to Step 17 |
7 |
Does the test lamp illuminate? | Go to Step 13 | Go to Step 12 |
8 |
Does the test lamp illuminate? | Go to Step 9 | Go to Step 18 |
9 |
Does the test lamp illuminate? | Go to Step 11 | Go to Step 10 |
10 | Test the supply voltage circuit of the rear defogger for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 15 |
11 | Test the ground circuit of the rear defogger for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 15 |
12 | Test the control circuit of the rear defogger relay for an open or short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 14 |
13 | Inspect for poor connections at the rear defogger relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 19 |
14 | Inspect for poor connections at the harness connector of the RIM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 20 |
15 | Inspect for poor connections at the rear defogger. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 21 |
16 | Repair a short to ground in the supply voltage circuit of the rear defogger. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | -- |
17 | Repair an open or a high resistance in the Ignition 1 voltage circuit of the rear defogger relay coil. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | -- |
18 | Repair an open or high resistance in the battery positive voltage circuit of the rear defogger relay switch. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | -- |
19 | Replace the rear defogger relay. Did you complete the replacement? | Go to Step 23 | -- |
20 |
Important: Perform the setup procedure for the Rear Integration Module (RIM). Replace the RIM. Refer to Rear Integration Body Control Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 23 | -- |
21 | Repair or replace the rear window glass. Refer to Bus Bar/Antenna Terminal Repair and Rear Window Replacement . Did you complete the replacement? | Go to Step 23 | -- |
22 | Replace the Instrument Panel Integration Module (IPM). Refer to Instrument Panel Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 23 | -- |
23 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |