Inspection Procedure
| 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 terminal A (wiring harness-side). 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 H/L LOW R 15 A fuse or H/L LOW L 15 A fuse. Inspect the fuses. Are the fuses normal? | Yes | Go to the next step. |
| No | Replace the fuse. | ||
| 3 | INSPECT H/L LOW RELAY Inspect the H/L LOW relay. (See RELAY INSPECTION article.) Is the H/L LOW relay normal? | Yes | Go to the next step. |
| No | Replace the H/L LOW relay. (See RELAY INSPECTION article.) | ||
| 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 H/L LOW relay terminal E. H/L LOW R 15 A fuse and discharge headlight control module terminal A H/L LOW L 15 A fuse and discharge headlight control module terminal A 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 the wiring harness between discharge headlight control module terminal B and ground for the following: Short to power supply Open circuit 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 the discharge headlight low bulb (previously verified as illuminating normally). (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 discharge headlight control module. (See DISCHARGE HEADLIGHT CONTROL MODULE REMOVAL/INSTALLATION .) | ||
DIAGNOSIS PROCEDURE
LIGHT SWITCH INSPECTION
- Verify that the continuity between the light switch terminals is as indicated in the illustration below.
- If not as indicated in the illustration below, replace the light switch.
Scheme 5
Scheme 6
Scheme 7
Scheme 8
Scheme 9
Scheme 10
- Verify that continuity between the front fog light switch terminals is as indicated in the illustration below.
Scheme 11
- Disconnect the negative battery cable.
- Remove the following parts: Decoration panel (See «DECORATION PANEL REMOVAL/INSTALLATION»(ref-663022-S35013114172014101600000) article.) Front console box mat (See «FRONT CONSOLE BOX MAT REMOVAL/INSTALLATION»(ref-663022-S21869071382014101600000) article.) Indicator panel (See «INDICATOR PANEL REMOVAL/INSTALLATION»(ref-663022-S05956493772014101600000) article.) Front console box (See «FRONT CONSOLE BOX REMOVAL/INSTALLATION»(ref-663022-S12692561512014101600000) article.) Center panel (See «CENTER PANEL REMOVAL/INSTALLATION»(ref-663022-S15432009222014101600000) article.)
- Remove in hazard warning switch.
- Install in the reverse order of removal.
Scheme 12
Scheme 13
- Verify that the continuity between the hazard warning switch terminals is as indicated in the illustration below. If not as indicated in the illustration below, replace the hazard warning switch.
Scheme 14
- Disconnect the negative battery cable.
- Remove the dashboard under cover. (Driver side) (See «DASHBOARD UNDER COVER REMOVAL/INSTALLATION»(ref-663022-S31534965712014101600000) article.)
- Remove the hood release lever. (See «HOOD LATCH AND RELEASE LEVER REMOVAL/INSTALLATION»(ref-663023-S07470612692014101600000) article.)
- Remove in the order indicated in the illustration below.
- Install in the reverse order of removal.
Scheme 15
Scheme 16
- Verify that continuity between the headlight leveling switch terminals is as indicated in the illustration below. If not as indicated in the illustration below, replace the headlight leveling switch.
Scheme 17
Scheme 18
- Disconnect the negative battery cable.
- Remove the dashboard under cover (Driver side). (See «DASHBOARD UNDER COVER REMOVAL/INSTALLATION»(ref-663022-S31534965712014101600000) article.)
- Remove in the order indicated in the illustration below.
- Install in the reverse order of removal.
AUTO LIGHT-OFF CONTROL MODULE INSPECTION
- Measure the voltage at the auto light-off control module terminals as indicated below.
- Measure the voltage at each terminal is as indicated in the Terminal Voltage Tables. If the voltage is not as specified in the Terminal Voltage Table, inspect the parts under "Inspection item (s)". If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the auto light-off control module.
Scheme 19
| Terminal | Signal | Connection | Test condition | Voltage (V) | Inspection item (s) | |
|---|---|---|---|---|---|---|
| 2C | IG1 | METER 10 A fuse | Ignition switch at ON | B+ | METER 10 A fuse Related wiring harness | |
| Ignition switch at OFF | 1.0 or less | |||||
| 2D | Power supply | ROOM 15 A fuse | Ignition switch at ON | B+ | ROOM 15 A fuse Related wiring harness | |
| Ignition switch at OFF | ||||||
| 2G | TNS relay operation | TNS relay | Ignition switch at ON | Light switch at TNS position | 1.0 or less | TNS relay Related wiring harness |
| Light switch at OFF position | B+ | |||||
| 2K | Headlight relay operation | Headlight relay | Light switch at headlight position | 1.0 or less | Light switch Related wiring harness | |
| Other | B+ | |||||
| 2M | Headlight switch signal (TNS) | Light switch | Ignition switch at ON | Light switch at TNS position | 1.0 or less | Light switch Related wiring harness |
| Light switch at OFF position | B+ | |||||
| 2N | Headlight switch on/off | Light switch | Ignition switch at ON | Light switch at headlight position | 1.0 or less | Light switch Related wiring harness |
| Light switch at OFF position | B+ | |||||
| 2O | Ground | Body ground | Under any condition | 1.0 or less | Related wiring harness | |
TERMINAL VOLTAGE REFERENCE CHART
AUTO LIGHT/WIPER CONTROL MODULE INSPECTION
- Measure the voltage at the auto light/wiper control module terminals as indicated below.
- Measure the voltage at each terminal is as indicated in the Terminal Voltage Tables. If the voltage is not as specified in the Terminal Voltage Table, inspect the parts under "Inspection item (s)". If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the auto light/wiper control module.
Scheme 20
| Terminal | Signal | Connection | Test condition | Voltage (V) | Inspection item (s) | |
|---|---|---|---|---|---|---|
| 1A | Headlight (RH) operation (high-beam) | Headlight (RH) (high-beam) | Ignition switch at ON | Dimmer switch at the high-beam position | B+ | Headlight (RH) (high-beam) Related wiring harness H/L HIGH 20 A |
| Dimmer switch at the low-beam position | 1.0 or less | |||||
| DRL mode | 1.0 or less | |||||
| 1B | Headlight (LH) operation (high-beam) | Headlight (LH) (high-beam) | Ignition switch at ON | Dimmer switch at the high-beam position | B+ | Headlight (LH) (high-beam) Related wiring harness H/L HIGH 20 A |
| Dimmer switch at the low-beam position | 1.0 or less | |||||
| DRL mode | 1.0 or less | |||||
| 1C | Wiper motor auto stop input signal | Wiper auto stop switch | Ignition switch at ON | Wiper auto stop at ON | B+ | Windshield wiper motor Related wiring harness |
| Wiper auto stop at OFF | 1.0 or less | |||||
| 1D | Windshield wiper switch signal (OFF) | Windshield wiper and washer switch | Ignition switch at ON | Wiper auto stop at ON | B+ | Windshield wiper motor Windshield wiper and washer switch Related wiring harness |
| Wiper auto stop at OFF | 1.0 or less | |||||
| 1E | IG2 | WIPER 30 A fuse | Ignition switch at ON | B+ | WIPER 30 A fuse Related wiring harness | |
| Ignition switch at LOCK or ACC | 1.0 or less | |||||
| 1F | Windshield wiper switch signal (HI) | Windshield wiper and washer switch (HI) | Ignition switch at ON | Windshield wiper switch at HI position | B+ | Windshield wiper and washer switch Related wiring harness |
| Windshield wiper switch at OFF position | 1.0 or less | |||||
| 1G | GND | Body ground | Under any condition | 1.0 or less | Related wiring harness | |
| 1H | Windshield wiper switch signal (AUTO) | Windshield wiper and washer switch (AUTO) | Ignition switch at ON | Windshield wiper switch at AUTO position | B+ | Windshield wiper and washer switch Related wiring harness |
| Windshield wiper switch at OFF position | 1.0 or less | |||||
| 1J | Washer switch signal | Windshield wiper and washer switch | Ignition switch at ON | Washer switch at ON position | B+ | Windshield wiper and washer switch Related wiring harness |
| Washer switch at OFF position | 1.0 or less | |||||
| 1L | Headlight switch signal (HI) | Light switch | Ignition switch at ON | Light switch at Hi or Pass position | 1.0 or less | Light switch Related wiring harness |
| Other | B+ | |||||
| 2A | Vehicle speed signal input | Instrument cluster | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | |||
| 2B | Wiper speed volume signal | Windshield wiper and washer switch | Ignition switch at ON | Sensitivity adjustment volume turned from + position to - position | 0 --> 0.8 --> 1.5-->1.9-->2.2 | Windshield wiper and washer switch Related wiring harnesses |
| 2C | IG1 | METER 10 A fuse | Ignition switch at ON | B+ | METER 10 A fuse Related wiring harness | |
| Ignition switch at OFF | 1.0 or less | |||||
| 2D | Power supply | ROOM 15 A fuse | Ignition switch at ON | B+ | ROOM 15 A fuse Related wiring harness | |
| Ignition switch at OFF | ||||||
| 2E | Wiper or headlight operation request | Rain sensor | Because this terminal is for communication, good/no good judgment by terminal voltage is not possible. | |||
| 2F | DLC-2 power supply | DLC-2 | Under any condition | B+ | Related wiring harness | |
| 2G | TNS relay operation | TNS relay | Ignition switch at ON | Light switch at TNS position | 1.0 or less | TNS relay Related wiring harness |
| Light switch at OFF position | B+ | |||||
| 2H | Auto stop switch signal | Rain sensor | Ignition switch at ON | Windshield wiper switch at LO position | B+ | Windshield wiper and washer switch Related wiring harnesses |
| Windshield wiper switch at OFF position | 1.0 or less | |||||
| 2I | Front fog light relay operation | Front fog light relay | Light switch at headlight position and dimmer switch at LO | Front fog light switch at ON | 1.0 or less | Front fog light relay Related wiring harness |
| Front fog light switch at OFF | B+ | |||||
| 2J | Front fog light switch on/off | Front fog light switch | Light switch at headlight position and dimmer switch at LO | Front fog light switch at ON | 1.0 or less | Front fog light switch Related wiring harness |
| Front fog light switch at OFF | B+ | |||||
| 2K | Headlight relay operation | Headlight relay | Light switch at headlight position | 1.0 or less | Light switch Related wiring harness | |
| Other | B+ | |||||
| 2L | Headlight switch signal (AUTO) | Light switch | Ignition switch at ON | Light switch at AUTO position | 1.0 or less | Light switch Related wiring harness |
| Other | B+ | |||||
| 2M | Headlight switch signal (TNS) | Light switch | Ignition switch at ON | Light switch at TNS position | 1.0 or less | Light switch Related wiring harness |
| Light switch at OFF position | B+ | |||||
| 2N | Headlight switch on/off | Light switch | Ignition switch at ON | Light switch at headlight position | 1.0 or less | Light switch Related wiring harness |
| Light switch at OFF position | B+ | |||||
| 2O | Ground | Body ground | Under any condition | 1.0 or less | Related wiring harness | |
| 2P | Parking brake lever depressed/released | Parking brake switch | Parking brake lever depressed | B+ | Parking brake switch Related wiring harness | |
| Parking brake lever released | 1.0 or less | |||||
TERMINAL VOLTAGE REFERENCE CHART
Scheme 21
- Connect the M-MDS (IDS) to the DLC-2.
- After the vehicle is identified, select the following items from the initialization screen of the IDS. Select "Module Programming".
- Then, select items from the screen menu in the following order. Select "Programmable Module Installation". Select "LCM".
- Perform the configuration according to the directions on the screen.
- Retrieve DTCs by the M-MDS, then verify that there is no DTC present. If a DTC (s) is detected, perform the applicable DTC inspection. (See DTC TABLE [AUTO LIGHT/WIPER CONTROL MODULE] article.)