Headlamp: Testing and Inspection
HID (High Intensity Discharge) Lamp System Troubleshooting
WARNING
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 07AAJ-S3MA100
1. Check the No. 45 (20 A) and No. 43 (20 A) fuses in the main under-hood fuse/relay box.
Are the fuses OK?
YES - Go to step 2.
NO - Replace the fuse(s), and recheck.
2. Turn the combination light switch to LOCK (0).
3. Do the battery terminal disconnection procedure. Procedures
4. Remove the socket from the HID bulb. HID (High Intensity Discharge) Bulb Removal
5. Check for corrosion (A) and traces of electrical arcing (B) at the socket mating part.
Is the socket corroded or burnt?
YES - Go to step 6.
NO - Replace the socket, and recheck.
6. Connect the HID bulb test light (A) to the socket (B).
7. Do the battery terminal reconnection procedure. Procedures
8. Turn the combination light (headlight) switch ON.
Does the bulb in the test light come on?
YES - Replace the original HID bulb. HID (High Intensity Discharge) Bulb Removal
NO - Go to step 9.
9. Turn the combination light (headlight) switch OFF.
10. Do the battery terminal disconnection procedure. Procedures
11. Remove the HID bulb test light from the bulb socket.
12. Disconnect the HID unit 2P connector.
13. Do the battery terminal reconnection procedure. Procedures
14. Turn the combination light (headlight) switch ON.
15. Check for continuity between the HID unit 2P connector terminal No. 1 and body ground.
Is there continuity?
YES - Go to step 16.
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 (right)/G301 (left) ('00-03 models) or G501 ('04-09 models).
16. Measure the voltage between the HID unit 2P connector terminal No. 2 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.. HID (High Intensity Discharge) Unit Replacement
NO - Go to step 17.
17. Disconnect main under-hood fuse/relay box connector A (18P).
18. Check for continuity between main under-hood fuse/relay box connector A (18P) terminals No. 3 or No. 4 and the appropriate HID unit 2P connector terminal No. 2.
Is there continuity?
YES - Replace the main under-hood fuse/relay box.. Service and Repair
NO - Repair an open in the wire between the main under-hood fuse/relay box and the HID unit.
