Important: The high mount stop lamp and the rear stop lamps share a common power supply that is the most probable cause for a complete system failure. This test is designed for a complete stop lamp failure. For any other symptoms, refer to Exterior Lights System Check .

Did you perform the Exterior Lights System Check?

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Go to Step 2

Go to Exterior Lights System Check

Inspect the STOP LP fuse in the underhood fuse block.

Is the STOP LP fuse open?

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Go to Step 6

Go to Step 3

1. Disconnect the TCC/stoplamp switch.
2. Connect a J 36169-A fused jumper wire between the TCC/stop lamp switch connector terminal A and terminal B.

Do the stop lamps light?

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Go to Step 5

Go to Step 4

Locate and repair the open in circuit in CKT  1540 (ORN) or CKT  17 (WHT).

Is the repair complete?

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Go to Exterior Lights System Check

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Adjust or replace the TCC/stop lamp switch. Refer to Stop Lamp Switch Replacement in Hydraulic Brakes.

Is the repair complete?

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Go to Exterior Lights System Check

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1. Disconnect the TCC/stop lamp switch.
2. Remove the high mount stop lamp relay from the underhood fuse block.
3. Connect a J 39200 digital multimeter (DMM) between the TCC/stop lamp switch connector terminal B and ground.

Does continuity exist?

Go to Step 7

Go to Step 8

1. Locate and repair the short to ground in CKT 1540 (ORN).
2. Replace the STOP LP fuse.

Is the repair complete?

Go to Exterior Lights System Check

Connect a J 39200 DMM between the TCC/stop lamp switch connector terminal A and ground.

Does continuity exist?

Go to Step 9

Go to Step 10

1. Locate and repair the short to ground in CKT 17 (WHT).
2. Replace the STOP LP fuse.

Is the repair complete?

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Go to Exterior Lights System Check

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1. Disconnect C211 at the turn signal switch.
2. Connect a J 39200 DMM between the high mount stop lamp relay cavity 3 and ground.

Does continuity exist?

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Go to Step 11

Go to Step 14

Inspect CKT 895 (YEL) for a short to ground.

Is a short present in CKT 895 (YEL)?

Go to Step 13

Go to Step 12

Replace the underhood fuse block.

Is the repair complete?

Go to Exterior Lights System Check

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1. Locate and repair a short to ground in CKT 895 (YEL).
2. Replace the STOP LP fuse.

Is the repair complete?

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Go to Exterior Lights System Check

Connect a J 39200 DMM between harness connector C211 cavity E6 and ground.

Does continuity exist?

Go to Step 15

Go to Step 16

Locate and repair the short to ground in CKT 1419 (DK GRN/WHT).

Is the repair complete?

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Go to Exterior Lights System Check

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Connect a J 39200 DMM between harness connector C211 cavity E7 and ground.

Does continuity exist?

Go to Step 17

Go to Step 18

Locate and repair the short to ground in CKT 1418 (YEL/BLK).

Is the repair complete?

Go to Exterior Lights System Check

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Replace the multifunction switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column - Standard.

Is the repair complete?

Go to Exterior Lights System Check