Did you perform the Exterior Lights System Check?

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Go to Step 2

Go to Exterior Lights System Check

1. Disconnect the inoperative bulb.
2. Inspect the bulb.

Is the bulb open?

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Go to Step 6

Go to Step 3

Connect a J 39200 digital multimeter (DMM) between CKT 1750 (BLK) (left side) or CKT 2250 (BLK) (right side) cavity G at the lamp socket and ground.

Is the resistance less than the specified value?

1 ohms

Go to Step 5

Go to Step 4

Locate and repair the open in CKT 1750 (BLK) or CKT 2250 (BLK).

Is the repair complete?

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Go to Exterior Lights System Check

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1. On pickup models, connect a test lamp between CKT 618 (YEL) (LH side) or CKT 619 (DK GRN) (RH side) cavity A at the lamp socket and ground.
2. On utility models, connect a test lamp between CKT 618 (YEL) (LH side) or CKT 619 (DK GRN) (RH side) cavity C at the lamp socket and ground.
3. Apply the service brakes.

Does the test lamp light?

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Go to Step 6

Go to Step 7

Replace the bulb.

Is the repair complete?

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Go to Exterior Lights System Check

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Locate and repair the open in the brake lamp feed wire.

Is the repair complete?

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Go to Exterior Lights System Check

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