HID Lamp System Troubleshooting
HID Lamp System TroubleshootingWARNING: A transient high tension (25,000 V) occurs at the bulb sockets or the high intensity discharge (HID) lamps when the combination light switch is turned ON, it may cause serious electrical shock or electrocution if you do not observe the cautions below.
CAUTION:
- Never turn on the combination light switch before fitting the HID bulbs to their bulb sockets and completing the reassembly of the headlight assembly.
- Do not service the headlights assembly in wet conditions, such as rain or snow, near a sprinkler system, or when your hands are wet to prevent electrocution.
- Do not touch the surface of the HID bulbs with your bare hands and do not stain it with any oils and fats.
- Do not disassemble the inverter unit and the igniter unit.
- Do not turn on the HID bulb by using a power source other than the battery mounted on your vehicle.
Special Tools Required
HID bulb test light assembly 07AAJ-S3MA100
NOTE: Before troubleshooting the HID Lamp System, perform the multiplex integrated control system troubleshooting using B-CAN System Diagnosis Test Mode A.
1. Check the No. 17 (15 A) and No. 16 (15 A) fuses in the under-dash fuse/relay box.
Are the fuses OK?
YES - Go to step 2.
NO - Replace the fuse(s), and recheck.
2. Make sure you have the anti-theft codes for the audio system and the navigation system (if equipped). Make sure the ignition switch is OFF.
3. Turn the combination light switch OFF.
4. Disconnect the negative battery cable.
5. Remove the bulb socket from the HID bulb.
6. Check for corrosion and traces of electrical arcing at the socket mating part.
Is the socket corroded or burnt?
YES - Replace the socket, and recheck.
NO - Go to step 7.
7. Connect the HID bulb test light assembly (A) to the bulb socket (B).
8. Reconnect the battery negative cable.
9. Turn the combination light (headlight) switch ON.
Does the bulb in the test light come on?
YES - Replace the original HID bulb.
NO - Go to step 10.
10. Turn the combination light (headlight) switch OFF.
11. Disconnect the battery negative cable.
12. Remove the HID bulb test light assembly from the bulb socket.
13. Reconnect the battery negative cable.
14. Disconnect the HID unit 2P connector.
15. Turn the combination light (headlight) switch ON.
16. Check for continuity between the No. 1 terminal of the HID unit 2P connector and body ground.
Is there continuity?
YES - Go to step 17.
NO - Repair an open in the wire between the HID unit and body ground. If the wire is OK, check for poor ground at G201 or G301.
NOTE: Enter the anti-theft codes for the audio system and the navigation system (if equipped). Set the clock (on vehicles without navigation).
17, Measure the voltage between the No. 2 terminal of the HID unit 2P connector and body ground.
Is there battery voltage?
YES - Substitute a known good HID unit, and recheck. If the symptom/indication goes away, replace the original HID unit.
NO
- For the left headlight, go to step 18.
- For the right headlight, go to step 20.
18. Disconnect under-dash fuse/relay box connector G (21P).
19. Check for continuity between the No. 17 terminal of under-dash fuse/relay box connector G (21P) and the No. 2 terminal of the HID unit 2P connector.
Is there continuity?
YES - Replace the under-dash fuse/relay box.
NO - Repair an open in the wire between the under-dash fuse/relay box and the HID unit.
20. Disconnect under-dash fuse/relay box connector.
21. Check for continuity between the No. 4 terminal of under-dash fuse/relay box connector F (34P) and the No. 2 terminal of the HID unit 2P connector.
Is there continuity?
YES - Replace the under-dash fuse/relay box.
NO - Repair an open in the wire between the under-dash fuse/relay box and the HID unit.