Schematic Reference: Exterior Lights Schematics

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

1. Turn ON the ignition, with the engine OFF.
2. Place the turn signal lever in the LEFT turn position.
3. Place the turn signal lever in the RIGHT turn position.

Do the appropriate turn signal lamps and/or indicators illuminate for each action?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Is only one turn signal lamp inoperative?

Go to Step 6

Go to Step 4

Is only one of the turn signal indicators inoperative?

Go to Step 5

Go to Step 7

1. Turn OFF the ignition.
2. Disconnect the instrument panel cluster (IPC). Refer to Instrument Cluster Replacement .
3. Turn ON the ignition, with the engine OFF. Place the turn signal switch in the appropriate position.
4. Probe the inoperative turn signal supply voltage circuit of the IPC with a test lamp that is connected to a good ground.
5. Place the turn signal lever in the position of the inoperative indicator.

Does the test lamp illuminate and flash?

Go to Step 10

Go to Step 18

1. Disconnect the inoperative turn signal lamp.
2. Probe the turn signal supply voltage circuit of the inoperative lamp with a test lamp that is connected to a good ground.
3. Place the turn signal lever in the position of the inoperative lamp.

Does the test lamp illuminate and flash?

Go to Step 19

Go to Step 20

Do the hazard lamps operate properly?

Go to Step 8

Go to Hazard Lamps Inoperative

1. Disconnect the hazard switch.
2. Turn the ignition ON with the engine OFF.
3. With a test lamp, test for voltage on the turn signal voltage supply circuit.

Does the test lamp illuminate?

Go to Step 12

Go to Step 9

Test the turn signal flasher signal circuit for an open, high resistance, or short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 17

Inspect the bulb of the inoperative turn signal indicator for an open filament.

Did you find an inoperative bulb?

Go to Step 23

Go to Step 11

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

Did you find and correct the condition?

Go to Step 24

Go to Step 21

1. The hazard switch in the OFF position.
2. With a DMM test the hazard switch for less than 1.0 ohms between the turn signal voltage supply terminal and the turn signal flasher relay voltage supply terminal.

Is the resistance within specification?

Go to Step 13

Go to Step 22

1. Reconnect the hazard switch, disconnect the headlamp switch.
2. Connect a test lamp to the headlamp switch voltage supply circuit and a good ground.

Does the test lamp illuminate and flash?

Go to Step 15

Go to Step 14

Test the headlamp switch voltage supply circuit for an open/high resistance or a short to ground. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 21

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With the DMM test the headlamp switch turn signal circuits for less than 1.0 ohms between the headlamp switch voltage supply terminal and the left/right turn signal terminal with the turn signal switch in the proper position.

Is the reading within specification?

Go to Step 16

Go to Step 20

Repair an open/high resistance or short to ground in the appropriate turn signal switch signal circuit.

Did you complete the repair?

Go to Step 24

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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 24

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Repair an open, high resistance, or short to ground in the inoperative turn signal supply voltage circuit. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 24

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

Did you complete the repair?

Go to Step 24

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Repair an open, high resistance, or short to ground in the inoperative turn signal supply voltage circuit. Refer to Circuit Testing and Wiring Repairs .

Did you complete the repair?

Go to Step 24

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

Did you complete the replacement?

Go to Step 24

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Replace the hazard switch.

Did you complete the replacement?

Go to Step 24

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Replace the inoperative turn signal indicator bulb. Refer to Instrument Cluster Bulb Replacement .

Did you complete the replacement?

Go to Step 24

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3