Discharge Headlight Bulb Service Warnings
- To prevent electrical shock when replacing the discharge headlight bulb, dry hands thoroughly, and carry out work in an area out of rain.
- When the light switch is on, approx. 25,000 V of high voltage passes through the discharge headlight bulb socket. Because of the danger of electrical shock, do not insert fingers or a tester.
- When the headlights are on, high voltage flows around the socket and bulb. When turning on the discharge headlights while working, always leave the headlights in the vehicle-installed condition to prevent electrical shock.
Scheme 70
Discharge Headlight Control Module Service Warnings
- Because of the danger of electrical shock, when inspecting with a tester, do not inspect the discharge headlight control module as a single unit or disassemble it.
Scheme 71
Discharge Headlight Control Module Reuse
- If the discharge headlight control module is dented or damaged in any way, replace the module with a new one to prevent electrical shock and improper operation.
- Although the control module may temporarily operate normally even though it has received an impact, it is possible that the interior may have been damaged. When reusing the control module, inspect the following items regarding discharge headlight illumination to verify that there are no malfunctions.
- Verify that the discharge headlights illuminate normally by testing them several times under cold illumination (headlights off for approx. 10 min or more and then turned on) and hot illumination (headlights on for approx. 15 min or more, turned off for approx. 1 min, and then turned on again) conditions.
- Inspect the headlight illumination in the period from directly after cold illumination until they are uniformly illuminated (approx. 5 min) and verify that there is no flickering or inconsistent brightness.
- Turn on the headlights for approx. 30 min with normal condition bulbs and verify that there is no brightness difference between the right and left, and that illumination is consistent.
Discharge Type
| WARNING | Incorrect servicing of the discharge headlights could result in electrical shock. Before servicing the discharge headlights, always refer to the discharge headlight service warnings. (See DISCHARGE HEADLIGHT SERVICE WARNINGS .) |
Scheme 72
- Disconnect the negative battery cable.
- Remove the fasteners, then slightly bend back the front mudguard.
- Remove the cover. CAUTION: The discharge headlight generates extremely high heat when it is illuminated. If the surface of the discharge headlight is soiled, excessive heat will build up and the life of the discharge headlight will be shortened. When replacing the discharge headlight, hold the metal flange, not the glass.
- Remove the connector.
- Remove the discharge headlight.
- Install in the reverse order of removal.
High-Beam
- Disconnect the negative battery cable.
- Remove the fasteners, then slightly bend back the front mudguard.
- Disconnect the connector. CAUTION: A halogen bulb generates extremely high heat when it is illuminated. If the surface of the bulb is soiled, excessive heat will build up and the life of the bulb will be shortened. When replacing the bulb, hold the metal flange, not the glass.
- Remove the headlight bulb.
- Install in the reverse order of removal.
Scheme 73
Scheme 74
Scheme 75
Scheme 76
Scheme 77
Scheme 78
- Point the headlight beams to a wall and verify that the headlight beams are as shown in the figure.
- Make a headlight adjustment screen as shown in the figure using double-weight, white paper.
- Adjust the tire pressure to the specification.
- Position the unloaded vehicle on a flat, level surface.
- Seat one person in the driver's seat.
- Line up the front fog lights with the white screen at a distance of 3 m {9.8 ft} apart.
- Measure the height of the center of the headlight. NOTE: Since the height of the vehicle varies depending on the vehicle situation, measure the height of the center of the headlight using the actual vehicle.
- Adjust the center of the adjustment screen to the point 655 mm {25.8 in}from the center of the vehicle and the measured height in the direction the headlight points, then affix the screen to the wall.
- Start the engine and charge the battery.
- Turn on the headlight low beams.
- Block the light of the headlight which is not adjusted.
- Verify that the elbow point of the headlight is at the position indicated by the adjustment screen. If the elbow point of the head light is not positioned as indicated in the adjustment screen, align the elbow point so that it is positioned as shown in the adjustment screen by turning the adjustment screw.
Discharge Headlight Inoperative
| WARNING | Incorrect servicing of the discharge headlights could result in electrical shock. Before servicing the discharge headlights, always refer to the discharge headlight service warnings. (See DISCHARGE HEADLIGHT SERVICE WARNINGS .) |
Terminal layout
Scheme 79
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
| 1 | INSPECT POWER SUPPLY CIRCUIT OF DISCHARGE HEADLIGHT CONTROL MODULE Disconnect the discharge headlight control module connector. Turn the headlight switch to the HEADLIGHT (LO) position. Measure the voltage at discharge headlight control module connector (harness-side) terminal C. Is the voltage approx. 12 V? | Yes | Go to Step 6. |
| No | Go to the next step. | ||
| 2 | INSPECT FUSE Turn the headlight switch to the OFF position. Remove the HEAD LOW R 15 A fuse (RH) or HEAD LOW L 15 A fuse (LH.) Inspect the fuses. Are the fuses normal? | Yes | Go to the next step. |
| No | Replace the fuse. | ||
| 3 | INSPECT HEADLIGHT RELAY Remove the headlight relay. (See RELAY LOCATION .) Inspect the headlight relay. (See RELAY INSPECTION .) Is the headlight relay normal? | Yes | Go to the next step. |
| No | Replace the headlight relay. (See RELAY LOCATION .) | ||
| 4 | INSPECT LIGHT SWITCH Inspect the light switch. (See LIGHT SWITCH INSPECTION .) Is the light switch normal? | Yes | Go to the next step. |
| No | Replace the light switch. (See LIGHT SWITCH REMOVAL/INSTALLATION .) | ||
| 5 | INSPECT WIRING HARNESS BETWEEN BATTERY AND DISCHARGE HEADLIGHT CONTROL MODULE Disconnect the negative battery cable. Inspect for continuity between the following terminals: Battery (positive terminal) and headlight relay (main fuse block terminal A) Headlight relay terminal 3A and HEAD LOW R 15 A fuse (RH) terminal G Headlight relay terminal 3A and HEAD LOW L 15 A fuse (LH) terminal G HEAD LOW R 15 A fuse (RH) terminal H and discharge headlight control module terminal C HEAD LOW L 15 A fuse (LH) terminal F and discharge headlight control module terminal C Are the wiring harnesses normal? | Yes | Go to the next step. |
| No | Replace the related wiring harness. | ||
| 6 | INSPECT WIRING HARNESS BETWEEN DISCHARGE HEADLIGHT CONTROL MODULE AND GROUND Inspect wiring harness between discharge headlight control module terminal D and ground for following: Short to power supply Open circuit Inspect the headlight relay. (See RELAY INSPECTION .) Is the wiring harness normal? | Yes | Go to the next step. |
| No | Replace the related wiring harness. | ||
| 7 | VERIFY WHETHER MALFUNCTION IS IN DISCHARGE HEADLIGHT BULB OR DISCHARGE HEADLIGHT CONTROL MODULE Install any other discharge headlight bulb (low-beam.) (See HEADLIGHT BULB REMOVAL/INSTALLATION .) Connect the discharge headlight control module connector. Turn the headlight switch to the HEADLIGHT (LO) position. Does the headlight (low-beam) illuminate? | Yes | System inspection completed. |
| No | Replace the front combination light. (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION .) | ||
INSPECTION PROCEDURE
Scheme 80
- Disconnect the negative battery cable.
- Remove the fasteners, then slightly bend back the front mudguard
- Remove in the order indicated in the table.
- Install in the reverse order of removal.
- Adjust the headlight aiming. (See «HEADLIGHT AIMING»(ref-367665-S17646484842010072700000) .)
Vehicle Without Auto Light System
- Remove the column cover. (See «COLUMN COVER REMOVAL/INSTALLATION»(ref-367662-S39346719792010072700000) .)
- Remove the ignition key illumination. (See «IGNITION KEY ILLUMINATION BULB REMOVAL/INSTALLATION»(ref-367665-S11023766142010072700000) .)
- Remove the light switch. (See «LIGHT SWITCH REMOVAL/INSTALLATION»(ref-367665-S41070433502010072700000) .)
- Verify that the continuity between the light switch terminals is as indicated in the table.
Headlight Switch
- If not as indicated in the table, replace the light switch.
Scheme 81
Scheme 82
Scheme 83
Scheme 84
Vehicle With Auto Light System
- Remove the column cover. (See «COLUMN COVER REMOVAL/INSTALLATION»(ref-367662-S39346719792010072700000) .)
- Remove the ignition key illumination. (See «IGNITION KEY ILLUMINATION BULB REMOVAL/INSTALLATION»(ref-367665-S11023766142010072700000) .)
- Remove the light switch. (See «LIGHT SWITCH REMOVAL/INSTALLATION»(ref-367665-S41070433502010072700000) .)
- Verify that the continuity between the light switch terminals is as indicated in the table.
- If not as indicated in the table, replace the light switch.
Scheme 85
Scheme 86
Scheme 87
Scheme 88
Scheme 89
Scheme 90
- Remove the column cover. (See «COLUMN COVER REMOVAL/INSTALLATION»(ref-367662-S39346719792010072700000) .)
- Remove the ignition key illumination. (Vehicles with keyless entry system) (See «IGNITION KEY ILLUMINATION BULB REMOVAL/INSTALLATION»(ref-367665-S11023766142010072700000) .)
- Remove the light switch. (See «LIGHT SWITCH REMOVAL/INSTALLATION»(ref-367665-S41070433502010072700000) .)
- Verify that the continuity between the light switch terminals is as indicated in the table. If not as indicated in the table, replace the light switch.
AUTO LIGHT ILLUMINATION LEVEL SETTING
- Connect the M-MDS to the DLC-2 connector.
- After the vehicle is identified, select the following items from the initialization screen of the M-MDS. When using the IDS (laptop PC) Select "Module Programming". When using the PDS (Pocket PC) Select "Programming". Select "Module Programming".
- Then, select items from the screen menu in the following order. Select "Programmable Parameters". Select "Exterior Lighting".
- Select "Low (Other)" or "Standard (Other)" on the M-MDS to set the illumination level.
Scheme 91
Note. When the M-MDS is set to Low (Other), the auto-light sensor sensitivity decreases, and the TNS and headlight illumination timing is slower.
Vehicles With Keyless Entry System
- Disconnect the negative battery cable.
- Remove the column cover. (See «COLUMN COVER REMOVAL/INSTALLATION»(ref-367662-S39346719792010072700000) .)
- Remove the ignition key illumination bulb.
- Install in the reverse order of removal.
Scheme 92
Vehicles With Advanced Keyless System
- Disconnect the negative battery cable.
- Remove the column cover. (See «COLUMN COVER REMOVAL/INSTALLATION»(ref-367662-S39346719792010072700000) .)
- Remove the screw.
- Remove the lens.
- Remove the ignition key illumination bulb.
- Install in the reverse order of removal.