Schematic Reference: Headlights/Daytime Running Lights (DRL) 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 ON the headlamps.
2. Ensure that the headlamp dimmer switch is in the HIGH position.

Do the high beams illuminate?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Is only one high beam headlamp inoperative?

Go to Step 15

Go to Step 4

Place the headlamp dimmer switch in to the FTP position.

Do the high beam headlamps illuminate?

Go to Step 7

Go to Step 5

1. Disconnect the body control module (BCM) connector C1.
2. Connect a jumper between the headlamp high beam relay control circuit and ground.

Do the high beam headlamps illuminate?

Go to Step 9

Go to Step 6

1. Remove the HI BEAM relay.
2. Install a fused jumper between the battery positive voltage supply circuit and the switched high beam voltage supply circuit.

Do the high beam headlamps illuminate?

Go to Step 10

Go to Step 14

1. Disconnect the multifunction switch.
2. Connect a jumper between the headlamp dimmer switch high beam signal circuit and ground.

Do the high beam headlamps illuminate?

Go to Step 12

Go to Step 8

Test for poor connection, short to battery positive voltage or an open in the headlamp dimmer switch high beam signal circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 20

1. Reconnect the BCM connector C1.
2. Disconnect the multifunction switch.
3. Connect a jumper between the headlamp dimmer switch high beam signal circuit and ground.

Do the headlamps illuminate?

Go to Step 11

Go to Step 20

Test for a short to battery positive voltage, a poor connection or an open in the headlamp high beam relay control circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 13

Test for a poor connection or an open in the ground circuit of the turn signal/multifunction switch. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 12

Inspect for a poor connection at the harness connector of the multifunction turn signal switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 16

Inspect for a poor connection at the harness connector of the HI BEAM relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 17

Inspect for a poor connection at the harness connectors of the underhood fuse block. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 18

Inspect the inoperative high beam headlamp battery positive voltage supply and ground circuit for the following:

Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 21

Go to Step 19

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

Did you complete the replacement?

Go to Step 21

--

Replace the HI BEAM relay. Refer to Relay Replacement .

Did you complete the replacement?

Go to Step 21

--

Replace the underhood fuse block. Refer to Relay Replacement .

Did you complete the repair?

Go to Step 21

--

Replace the inoperative high beam headlamp. Refer to Headlamp Assembly or Headlamp Bulb Replacement .

Did you complete the replacement?

Go to Step 21

--

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

Go to Step 21

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2