Schematic Reference: Exterior Lights Schematics

Connector End View Reference: Master Electrical Component List

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

1. Turn the ignition switch to the ON position.
2. Activate the left and right turn signals.

Do the turn signals and indicators operating properly?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Is only one lamp inoperative?

Go to Step 4

Go to Step 6

Place a test lamp between the supply voltage and ground circuits at the inoperative lamp socket or connector.

Does the test lamp illuminate when the turn signal is activated?

Go to Step 14

Go to Step 5

Test for an open or high resistance in the supply voltage circuit or ground circuit of the inoperative lamp. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 15

Go to Step 10

With a scan tool, activate each turn signal with the body control module (BCM) output control function.

Do all lamps operate correctly?

Go to Step 8

Go to Step 7

Are only the instrument panel (I/P) turn signal indicators inoperative?

Go to Step 11

Go to Step 9

Test for one of the following conditions. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 15

Go to Step 12

Test for a short to ground in the supply voltage circuits of the inoperable lamps. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 15

Go to Step 10

Test for a poor connection at the harness connector at the BCM, driver door switch, or passenger door switch as applicable. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 15

Go to Step 13

Replace the instrument panel cluster (IPC). Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 15

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Replace the multifunction turn signal switch. Refer to Turn Signal Multifunction Switch Replacement .

Is the replacement complete?

Go to Step 15

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Replace the BCM, driver door switch, or passenger door switch as applicable. Refer to Control Module References for replacement, setup, and programming.

Did you complete the repair?

Go to Step 15

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Replace the inoperative turn signal lamp. Refer to the appropriate replacement procedure.

Did you complete the repair?

Go to Step 15

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1. Connect all connectors and components that were previously disconnected.
2. Verify that the turn signal lamps and indicators operate properly.

Do the turn signal lamps and indicators operate properly?

System OK

Go to Step 3