DEFINITION: LH turn signal lamp or LH taillamp is inoperative.

Did you perform the Exterior Lights Diagnostic System Check?

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Go to Step 2

Go to Exterior Lights System Check

1. Turn the ignition switch to the ON position.
2. Determine if the LH turn signal lamp or the LH taillamp is inoperative.

Is the LH turn signal lamp inoperative?

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Go to Step 8

Go to Step 3

1. Disconnect the LH taillamp connector.
2. Engage the turn signal switch so that the LH taillamp is supposed to be on.
3. Use a DMM in order to measure the voltage between terminal  D of the LH taillamp connector and a known good ground.
4. When the turn signal switch is engaged, the voltage on this circuit varies from 0 V to B+.

Does the voltage measure in the specified range?

0 V-B+

Go to Step 5

Go to Step 4

1. Locate an open or a high resistance in CKT FM20.
2. Repair the open or the high resistance in CKT FM20.

Did you complete the repair?

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Go to Step 13

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Use the DMM in order to measure the resistance between terminal C of the LH taillamp connector and a known good ground.

Does the resistance measure less than the specified value?

5 ohms

Go to Step 7

Go to Step 6

1. Locate an open or a high resistance in CKT F125.
2. Repair the open or the high resistance in CKT F125.

Did you complete the repair?

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Go to Step 13

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Replace the LH stop/taillamp. Refer to Tail Lamp Bulb Replacement in Lighting Systems.

Did you complete the repair?

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Go to Step 13

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1. Disconnect the LH turn signal lamp connector.
2. Engage the turn signal switch so that the LH turn signal lamp is supposed to be on.
3. Use the DMM in order to measure the voltage between terminal C of the LH turn signal lamp connector and a known good ground.
4. When the turn signal is engaged, the voltage on this circuit varies from 0 V to B+.

Does the voltage measure in the specified range?

0 V-B+

Go to Step 10

Go to Step 9

1. Locate an open or a high resistance in CKT FM2.
2. Repair the open or the high resistance in CKT FM2.

Did you complete the repair?

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Go to Step 13

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Use the DMM in order to measure the resistance between terminal A of the LH turn signal lamp connector and a known good ground.

Does the resistance measure less than the specified value?

5 ohms

Go to Step 12

Go to Step 11

1. Locate an open or a high resistance in CKT F12.
2. Repair the open or the high resistance in CKT F12.

Did you complete the repair?

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Go to Step 13

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Replace the LH park/turn signal lamp. Refer to Park/Turn Signal Lamp Bulb Replacement in Lighting Systems.

Did you complete the repair?

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Go to Step 13

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1. Connect all connectors and components that were previously disconnected.
2. Verify that the LH turn signal lamp and the LH taillamp operate properly.

Does the LH turn signal lamp and the LH taillamp operate properly?

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Go to Exterior Lights System Check

Go to Step 1

DEFINITION: RH turn signal lamp or RH taillamp is inoperative.

Did you perform the Exterior Lights Diagnostic System Check?

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Go to Step 2

Go to Exterior Lights System Check

1. Turn the ignition switch to the ON position.
2. Determine if the RH turn signal lamp or the RH taillamp is inoperative.

Is the RH turn signal lamp inoperative?

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Go to Step 8

Go to Step 3

1. Disconnect the RH taillamp connector.
2. Engage the turn signal switch so that the RH taillamp is supposed to be on.
3. Use a DMM in order to measure the voltage between terminal A of the RH taillamp connector and a known good ground.
4. When the turn signal switch is engaged, the voltage on this circuit varies from 0 V to B+.

Does the voltage measure in the specified range?

0 V-B+

Go to Step 5

Go to Step 4

1. Locate an open or a high resistance in CKT FU20.
2. Repair the open or the high resistance in CKT FU20.

Did you complete the repair?

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Go to Step 13

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Use the DMM in order to measure the resistance between terminal B of the RH taillamp connector and a known good ground.

Does the resistance measure less than the specified value?

5 ohms

Go to Step 7

Go to Step 6

1. Locate an open or a high resistance in CKT F25.
2. Repair the open or the high resistance in CKT F25.

Did you complete the repair?

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Go to Step 13

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Replace the RH stop/taillamp. Refer to Tail Lamp Bulb Replacement in Lighting Systems.

Did you complete the repair?

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Go to Step 13

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1. Disconnect the RH turn signal lamp connector.
2. Engage the turn signal switch so that the RH turn signal lamp is supposed to be on.
3. Use the DMM in order to measure the voltage between terminal C of the RH turn signal lamp connector and a known good ground.
4. When the turn signal switch is engaged, the voltage on this circuit varies from 0 V to B+.

Does the voltage measure in the specified range?

0 V-B+

Go to Step 10

Step 9

1. Locate an open or a high resistance in CKT FU2.
2. Repair the open or the high resistance in CKT FU2.

Did you complete the repair?

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Go to Step 13

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Use the DMM in order to measure the resistance between terminal A of the RH turn signal lamp connector and a known good ground.

Does the resistance measure less than the specified value?

5 ohms

Go to Step 12

Go to Step 11

1. Locate an open or a high resistance in CKT F16.
2. Repair the open or the high resistance in CKT F16.

Did you complete the repair?

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Go to Step 13

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Replace the RH park/turn signal lamp. Refer to Park/Turn Signal Lamp Bulb Replacement in Lighting Systems.

Did you complete the repair?

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Go to Step 13

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1. Connect all connectors and components that were previously disconnected.
2. Verify that the RH turn signal lamp and the RH taillamp operate properly.

Does the RH turn signal lamp and the RH taillamp operate properly?

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Go to Exterior Lights System Check

Go to Step 1