Schematic Reference: Exterior Lights Schematics

Connector End View Reference: Master Electrical Component List

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

Do the turn signal lamps and indicators operate properly?

Go to Step 3

Go to Turn Signal Lamps and/or Indicators Inoperative

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Observe the Hazard Lamp Switch parameter in the instrument panel module (IPM) inputs data list.
4. Turn the hazard switch ON and OFF several times.

Does the Hazard Lamp Switch parameter change from INACTIVE to ACTIVE as the hazard switch is cycled?

Go to Step 4

Go to Step 5

Test the hazard switch supply voltage circuit for an open, high resistance, or short to voltage. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 10

1. Turn OFF the ignition.
2. Disconnect the hazard switch harness connector.
3. Connect a 3-amp fused jumper wire between the hazard switch signal circuit at the hazard switch harness connector and the ground circuit of the hazard switch harness connector.
4. Turn ON the ignition with the engine OFF.
5. Observer the Hazard Lamp Switch parameter in the IPM inputs data list.

Does the Hazard Lamp Switch parameter display ACTIVE?

Go to Step 9

Go to Step 6

Test the hazard switch ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 7

Test the hazard switch signal circuit for an open, high resistance, or short to voltage. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 8

Inspect for poor connections at the C1 harness connector of the IPM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 11

Inspect for poor connections at the harness connector of the hazard switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 13

Inspect for poor connections at the harness connector of the rear integration module (RIM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 14

Go to Step 12

Replace the IPM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 14

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Replace the RIM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 14

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Replace the hazard switch assembly. Refer to Instrument Panel Lamp Dimmer Switch Replacement .

Did you complete the replacement?

Go to Step 14

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2