Headlamps Inoperative - Low Beams (HID Headlamps)
Headlamps Inoperative - Low Beams (HID Headlamps)
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Are both low beam headlamps inoperative? | Go to Step 3 | Go to Step 8 |
| 3 |
|
Go to Step 5 | Go to Step 4 |
| 4 |
|
Go to Step 14 | Go to Step 11 |
| 5 |
|
Go to Step 6 | Go to Step 10 |
| 6 | Connect a test lamp between the headlamp low beam relay switch side supply voltage circuit and ground. Does the test lamp illuminate? |
Go to Step 7 | Go to Step 19 |
| 7 |
|
Go to Step 15 | Go to Step 8 |
| 8 |
|
Go to Step 17 | Go to Step 9 |
| 9 | Test the headlamp low beam supply voltage circuit for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 18 |
| 10 | Test the headlamp low beam relay control circuit for an open, high resistance, or short to voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 13 |
| 11 | Test the turn signal/multifunction switch ground circuit for an open or high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 12 |
| 12 | Test the turn signal/multifunction switch headlamp ON signal circuit for an open, high resistance, or short to voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 13 |
| 13 | Test the twilight sentinel delay signal circuit of the IPM for a short to voltage. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 16 |
| 14 | Inspect for poor connections at the C3 harness connector of the turn signal/multifunction 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 25 | Go to Step 20 |
| 15 | Inspect for poor connections at the headlamp low 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 25 | Go to Step 21 |
| 16 | Inspect for poor connections at the harness connector of the IPM. 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 25 | Go to Step 22 |
| 17 | Inspect for poor connections at the harness connector of the inoperative low beam high intensity discharge (HID) 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 25 | Go to Step 23 |
| 18 | Locate and repair an 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 25 | - |
| 19 | Locate and repair an open or high resistance in the switch side supply voltage circuit of the headlamp low beam relay. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 25 | - |
| 20 | Replace the turn signal/multifunction switch. Refer to Turn Signal Multifunction Switch Replacement
in Steering Wheel and Column. Did you complete the replacement? |
Go to Step 25 | - |
| 21 | Replace the headlamp low beam relay. Refer to Relay Replacement (Within an Electrical Center)
or Relay Replacement (Attached to Wire Harness)
in Wiring Systems. Did you complete the replacement? |
Go to Step 25 | - |
| 22 | Replace the IPM. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 25 | - |
| 23 | Replace the inoperative HID headlamp arc tube. Refer to High Intensity Discharge Headlamp Ballast Replacement
. Do the low beam headlamps operate properly? |
Go to Step 25 | Go to Step 24 |
| 24 | Replace the inoperative HID headlamp ballast. Refer to High Intensity Discharge Headlamp Ballast Replacement
. Did you complete the replacement? |
Go to Step 25 | - |
| 25 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |