Headlamps Inoperative - High Beams Domestic
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics | |||
1 | Did you perform the Lighting Systems Diagnostic System Check? | Go to Step 2 | |
2 |
Do the low beam headlamps illuminate? | Go to Step 3 | |
3 | Place the headlamp dimmer switch in the HIGH BEAM position. Do the high beam headlamps illuminate? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 4 |
4 | Are both high beam headlamps inoperative? | Go to Step 7 | Go to Step 5 |
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 21 |
6 | Connect a test lamp between the supply voltage circuit of the inoperative high beam headlamp and the ground circuit of the inoperative high beam headlamp. Does the test lamp illuminate? | Go to Step 19 | Go to Step 13 |
7 |
Do hear a click when you command the HDLP HI BM relay ON and OFF? | Go to Step 11 | Go to Step 8 |
8 |
Connect a test lamp between the supply voltage circuit of the HDLP HI BM relay coil and a good ground. Does the test lamp illuminate? | Go to Step 9 | Go to Step 23 |
9 |
Does the test lamp turn ON and OFF with each command? | Go to Step 17 | Go to Step 10 |
10 |
Does the test lamp turn ON and OFF with each command? | Go to Step 18 | Go to Step 14 |
11 |
Does the test lamp illuminate? | Go to Step 12 | Go to Step 22 |
12 | Connect a 10 amp fused jumper between the battery positive voltage circuit of the HDLP HI BM relay switch and the supply voltage circuit of the high beam headlamps. Do the high beam headlamps illuminate? | Go to Step 17 | Go to Step 21 |
13 | Test for an open or high resistance in the ground circuit of the inoperative high beam headlamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 16 |
14 | Test for an open or high resistance in the control circuit of the HDLP HI BM relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 15 |
15 | Test for an open or high resistance in the headlamp control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 20 |
16 | Inspect for poor connections at the DRL relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 24 |
17 | Inspect for poor connections at the HDLP HI BM relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 26 |
18 | Inspect for poor connections at the headlamp dimmer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 25 |
19 | Inspect for poor connections at the inoperative high beam headlamp. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 27 |
20 | Inspect for poor connections at the Dash Integration Module (DIM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | Go to Step 28 |
21 | Repair an open or high resistance in the supply voltage circuit of the high beam headlamps. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 29 | -- |
22 | Repair an open or high resistance in the battery positive voltage circuit of the HDLP HI BM relay switch. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 29 | -- |
23 | Repair an open or high resistance in the supply voltage circuit of the HDLP HI BM relay coil. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 29 | -- |
24 | Replace the DRL relay. Refer to Relay Replacement in Wiring Systems. Did you find and correct the condition? | Go to Step 29 | -- |
25 | Replace the headlamp dimmer switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | Go to Step 29 | -- |
26 | Replace the HDLP HI BM relay. Refer to Relay Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 29 | -- |
27 | Replace the inoperative high beam headlamp. Refer to Headlamp Bulb Replacement . Did you complete the replacement? | Go to Step 29 | -- |
28 |
Important:: Perform the setup procedure for the Dash Integration Module (DIM). Refer to Body Control Module (BCM) Programming/RPO Configuration . Replace the DIM. Refer to Dash Integration Module Replacement in Body Control System. Did you complete the replacement? | Go to Step 29 | -- |
29 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
Headlamps Inoperative - High Beams Export
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
-
Listen for an audible click when the relay operates. Cycle between low and high positions. Repeat the cycles as necessary.
-
Tests for supply voltage at the coil side of the relay.
-
Verifies that the headlamp switch is providing ground to the relay.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics | |||
1 | Was the Lighting System Diagnostic System Check performed? | Go to Step 2 | |
2 |
Do the high beam headlamps operate properly? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Do the low beam headlamps operate properly? | Go to Step 4 | |
Cycle the headlamp dimmer switch between low and high. Does the headlamp high beam relay turn ON and OFF with each cycle? | Go to Step 7 | Go to Step 5 | |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 18 | |
Does the test lamp turn ON and OFF with each cycle? | Go to Step 13 | Go to Step 10 | |
7 |
Does the test lamp illuminate? | Go to Step 8 | Go to Step 17 |
8 |
Did both of the high beam headlamps illuminate? | Go to Step 13 | Go to Step 9 |
9 |
Does the test lamp illuminate? | Go to Step 15 | Go to Step 11 |
10 | Test the control circuit of the headlamp high beam relay for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 12 |
11 | Test the headlamp high beam supply voltage circuit for a high resistance or open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 16 |
12 | Test the headlamp low beam relay control circuit of the headlamp dimmer switch for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 14 |
13 | Inspect for poor connections at the headlamp high beam relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 19 |
14 | Inspect for poor connections at the harness connector of the headlamp dimmer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 20 |
15 | Inspect for poor connections at the headlamp bulb. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 22 | Go to Step 21 |
16 | Repair the open or high resistance in the headlamp ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 22 | -- |
17 | Repair the high resistance or open in the switch side supply voltage circuit of the high beam headlamp relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 22 | -- |
18 | Repair the coil side supply voltage circuit of the headlamp high beam relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 22 | -- |
19 | Replace the high beam headlamp relay. Refer to Relay Replacement in Wiring Systems. Did you complete the replacement? | Go to Step 22 | -- |
20 | Replace the headlamp dimmer switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | Go to Step 22 | -- |
21 | Replace the inoperative headlamp bulb. Refer to Headlamp Bulb Replacement . Did you complete the replacement? | Go to Step 22 | -- |
22 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
