Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Fog Lights Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Are both rear fog lamps inoperative? | Go to Step 3 | Go to Step 9 |
3 |
Do both rear fog lamps turn ON? | Go to Step 8 | Go to Step 4 |
4 |
Does the test lamp illuminate? | Go to Step 5 | Go to Step 20 |
5 | Probe the rear fog lamp relay switch side supply voltage circuit with a test lamp connected to ground. Does the test lamp illuminate? | Go to Step 6 | Go to Step 21 |
6 |
Does the test lamp turn ON and OFF with each command? | Go to Step 7 | Go to Step 13 |
7 |
Do both rear fog lamps illuminate? | Go to Step 14 | Go to Step 12 |
8 |
Do the rear fog lamps turn ON? | Go to Step 15 | Go to Step 10 |
9 |
Does the test lamp illuminate? | Go to Step 18 | Go to Step 12 |
10 | Test the rear fog lamp switch ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 11 |
11 | Test the rear fog lamp switch signal circuit for an open, high resistance, or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 17 |
12 | Test the rear fog lamp supply voltage circuit for an open, high resistance, or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 19 |
13 | Test the rear fog lamp relay control circuit for an open, high resistance, or short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 16 |
14 | Inspect for poor connections at the rear fog lamp 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 27 | Go to Step 22 |
15 | Inspect for poor connections at the harness connector of the turn signal/multifunction switch. 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 27 | Go to Step 23 |
16 | 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 27 | Go to Step 24 |
17 | Inspect for poor connections at the harness connector of the instrument panel module (IPM). 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 27 | Go to Step 25 |
18 | Inspect for poor connections at the inoperative rear fog lamp bulb. 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 27 | Go to Step 26 |
19 | Locate and repair an open or high resistance in the rear fog lamp ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | -- |
20 | Locate and repair an open or high resistance in the control side supply voltage circuit of the rear fog lamp relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 27 | -- |
21 | Locate and repair an open or high resistance in the switch side supply voltage circuit of the rear fog lamp relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | -- |
22 | Replace the rear fog lamp relay. Refer to Relay Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 27 | -- |
23 | Replace the turn signal/multifunction switch. Refer to Turn Signal Multifunction Switch Replacement . Did you complete the replacement? | Go to Step 27 | -- |
24 | Replace the RIM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 27 | -- |
25 | Replace the IPM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 27 | -- |
26 | Replace the inoperative rear fog lamp bulb. Did you complete the replacement? | Go to Step 27 | -- |
27 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |