Lighting: Overview Lexus RX II рестайлинг

DESCRIPTION

This DTC is output when failure in the light sensor circuit is detected.

DTC DETECTING CONDITION CHART

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1. READ VALUE OF INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the items below in the DATA LIST, and read the displays on the intelligent tester. BODY NORMAL CONDITION CHART Item Measurement Item/ Display (Range) Normal Condition Diagnostic Note ILLUMINATE RATE Illuminate rate/(0.8 ms to 22.0 ms) Value is output according to ambient light - NG: GO TO step 2 OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
2. CHECK HARNESS OR CONNECTOR SENSOR) (BODY ECU - AUTOMATIC LIGHT CONTROL Disconnect the automatic light control sensor connector and body ECU connector. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified Condition CLTE (A10-3) - CLTE (B4-4) Always Below 1 ohms CLTS (A10-5) - CLTS (B4-5) Always Below 1 ohms CLTB (A10-6) - CLTB (B4-6) Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. REPLACE AUTOMATIC LIGHT CONTROL SENSOR Return to normal operation. NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OK: END

The headlight swivel ECU converts the signal from the AFS ECU to operate the headlight swivel motor, and receives the signal regarding the direction of the headlight and condition of the headlight swivel motor.

DTC DETECTING CONDITION CHART

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1. CHECK HARNESS AND CONNECTOR (AFS ECU - HEADLIGHT SWIVEL ECU) Disconnect the AFS ECU connector and headlight connector on the headlight swivel ECU side. Measure the resistance according to the value(s) in the table below. Resistance: LH Side (B2410) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition A15-25 (SBLL) - H6-1 Always Below 1 ohms A15-26 (SBGL) - H6-3 Always Below 1 ohms A15-28 (IGSL) - H6-2 Always Below 1 ohms A15-27 (ESL) - H6-4 Always Below 1 ohms A15-25 - Body ground Always 10 kohms or higher A15-26 - Body ground Always 10 kohms or higher A15-28 - Body ground Always 10 kohms or higher RH Side (B2411) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition A15-9 (SBLR) - H10-1 Always Below 1 ohms A15-10 (SBGR) - H10-3 Always Below 1 ohms A15-12 (IGSR) - H10-2 Always Below 1 ohms A15-11 (ESR) - HUM Always Below 1 ohms A15-9 - Body ground Always 10 kohms or higher A15-10 - Body ground Always 10 kohms or higher A15-12 - Body ground Always 10 kohms or higher Disconnect the headlight connector on the headlight swivel ECU side and the headlight swivel ECU connector. Measure the resistance according to the value(s) in the table below. Resistance: LH Side (B2410) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition H6-1 - H6-a-1 (BUS LINE) Always Below 1 ohms H6-2 - H6-a-5 (IG) Always Below 1 ohms H6-3 - H6-a-7 (BUS GND) Always Below 1 ohms H6-4 - H6-a-10 (P GND) Always Below 1 ohms RH Side (B2411) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition H10-1 - H10-a-1 (BUS LINE) Always Below 1 ohms H10-2 - H10-a-5 (IG) Always Below 1 ohms H10-3 - H10-a-7 (BUS GND) Always Below 1 ohms H10-4 - H10-a-10 (P GND) Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (AFS ECU GROUND CIRCUIT) Disconnect the AFS ECU connector. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition A14-1 (E1) - Body ground Always Below 1 ohms A14-11 (E1S) - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT AFS ECU Disconnect the headlight swivel ECU connector. Measure the voltage according to the value(s) in the table below. Voltage: LH Side (B2410) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition IG (H6-a-5) - P GND (H6-a-10) Ignition switch OFF --> ON Below 1 V --> 10 to 14 V RH Side (B2411) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition IG (H10-a-5) - P GND (H10-a-10) Ignition switch OFF --> ON Below 1 V --> 10 to 14 V Result RESULT CHART Condition Proceed to NG A OK (When checking from the DTC) B OK (When checking from the PROBLEM SYMPTOMS TABLE) C B: GO TO step 4 C: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE A: REPLACE AFS ECU
4. REPLACE AFS ECU OK: Returns to normal operation. NG: REPLACE AFS ECU OK: END

The swivel actuator receives the signal from the AFS ECU via the headlight swivel ECU to operate and sends the signal regarding direction of the headlight and condition of the headlight swivel motor to the headlight swivel ECU.

DTC DETECTING CONDITION CHART

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1. CHECK HARNESS AND MOTOR) CONNECTOR (HEADLIGHT SWIVEL ECU - HEADLIGHT SWIVEL Disconnect the headlight swivel ECU connector and headlight swivel motor connector. Measure the resistance according to the value(s) in the table below. Resistance: LH Side (B2412) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition U (H6-a-2) - U-OUT (H6-b-3) Always Below 1 ohms W (H6-a-3) - W-OUT (H6-b-5) Always Below 1 ohms GND (H6-a-4) - GND (H6-b-2) Always Below 1 ohms MOTOR V (H6-a-6) - MOTOR-V (H6-b-7) Always Below 1 ohms V (H6-a-8) - V-OUT (H6-b-4) Always Below 1 ohms 5V (H6-a-9) - 5V (H6-b-1) Always Below 1 ohms MOTOR U (H6-a-11) - MOTOR-U (H6-b-6) Always Below 1 ohms MOTOR W (H6-a-12) - MOTOR-W (H6-b-8) Always Below 1 ohms RH Side (B2413) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition U (H10-a-2) - U-OUT (H10-b-3) Always Below 1 ohms W (H10-a-3) - W-OUT (H10-b-5) Always Below 1 ohms GND (H10-a-4) - GND (H10-b-2) Always Below 1 ohms MOTOR V (H10-a-6) - MOTOR- V (H10-b-7) Always Below 1 ohms V (H10-a-8) - V-OUT (H10-b-4) Always Below 1 ohms 5V (H10-a-9) - 5V (H10-b-1) Always Below 1 ohms MOTOR U (H10-a-11) - MOTOR-U (H10-b-6) Always Below 1 ohms MOTOR W (M0-a-12) - MOTOR-W (H10-b-8) Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. INSPECT HEADLIGHT SWIVEL MOTOR Disconnect the headlight swivel motor connector. Measure the resistance according to the value(s) in the table below. Resistance: LH Side (B2412) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition MOTOR-U (H6-b-6) - MOTOR-V (H6-b-7) Always 8.5 to 10.5 ohms MOTOR-V (H6-b-7) - MOTOR-W (H6-b-8) Always 8.5 to 10.5 ohms MOTOR-W (H6-b-8) - MOTOR-U (H6-b-6) Always 8.5 to 10.5 ohms RH Side (B2413) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition MOTOR-U (H10-b-6) - MOTOR-V (H10-b-7) Always 8.5 to 10.5 ohms MOTOR-V (H10-b-7) - MOTOR-W (H10-b-8) Always 8.5 to 10.5 ohms MOTOR-W (H10-b-8) - MOTOR-U (H10-b-6) Always 8.5 to 10.5 ohms NG: REPLACE HEADLIGHT SWIVEL MOTOR OK: Go to next step
3. INSPECT AFS ECU Disconnect the headlight swivel motor connector. Measure the voltage according to the value(s) in the table below. Voltage: LH Side (B2412) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 5V (H6-b-1) - GND (H6-b-2) Ignition switch OFF --> ON Below 1 V --> 4.5 to 5.5 V RH Side (B2413) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 5V (H10-b-1) - GND (H10-b-2) Ignition switch OFF --> ON Below 1 V --> 4.5 to 5.5 V Result RESULT CHART Condition Proceed to OK A NG (When checking from the PROBLEM SYMPTOMS TABLE) B NG (When checking from the DTC) C B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE C: REPLACE AFS ECU A: Go to next step
4. REPLACE HEADLIGHT SWIVEL MOTOR OK: Returns to normal operation. NG: GO TO step 5 OK: END
5. REPLACE AFS ECU OK: Returns to normal operation. NG: REPLACE AFS ECU OK: END

The AFS ECU receives the signal regarding a swerve-angle from the steering sensor in the steering wheel.

DTC DETECTING CONDITION CHART

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1. CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) Check the electronically controlled brake system (See «DTC CHECK / CLEAR» ). OK: DTC is not output. NG: GO TO «DTC CHART» OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (STEERING SENSOR - AFS ECU) Disconnect the steering sensor connector and AFS ECU connector. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition SS1- (S10-7) - SS- (A14-8) Always Below 1 ohms SS1+ (S10-8) - SS+ (A14-7) Always Below 1 ohms SS- (A14-8) - Body ground Always 10 kohms. or higher SS+ (A14-7) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT AFS ECU Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition SS+ (A14-7) - SS- (A14-8) Ignition switch ON 0 to 5 V (Pulse generation) Result RESULT CHART Condition Proceed to OK (When checking from the DTC) A OK (When checking from the PROBLEM SYMPTOMS TABLE) B NG C B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE C: REPLACE STEERING SENSOR A: REPLACE AFS ECU

The AFS ECU receives the vehicle speed signal of the rear wheels from the skid control ECU.

DTC DETECTING CONDITION CHART

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1. CHECK DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) Check the DTC of electronically controlled brake system (See «DTC CHECK / CLEAR» ). OK: DTC is not output. NG: GO TO «DTC CHART» OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - AFS ECU) Disconnect the skid control ECU connector and AFS ECU connector. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition RRO (S40-33) - SPDR (A15-7) Always Below 1 ohms RLO (S39-25) - SPDL (A15-6) Always Below 1 ohms SPDR (A15-7) - Body ground Always 10 kohms or higher SPDL (A15-6) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT AFS ECU Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition SPDL (A15-6) - E1 (A14-1) Drive at about 30 km/h (19 mph) 0 to 14 V Pulse generation (*1) SPDR (A15-7) - E1 (A14-1) Drive at about 30 km/h (19 mph) 0 to 14 V Pulse generation (*1) (b) *1: Oscilloscope wave HINT: Gauge set: 5 V/DIV, 2 ms/DIV Condition: Drive at about 30 km/h (19 mph) Result RESULT CHART Condition Proceed to OK (When checking from the DTC) A OK (When checking from the PROBLEM SYMPTOMS TABLE) B NG C B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE C: REPLACE SKID CONTROL ECU A: REPLACE AFS ECU

The AFS ECU receives the signals from the height control sensor rear RH.

DTC DETECTING CONDITION CHART

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1. CHECK HARNESS AND CONNECTOR (HEIGHT CONTROL SENSOR SUB-ASSEMBLY REAR RH POWER SOURCE) Disconnect the H26 connector from the height control sensor rear RH. Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition SHB (H26-3) - SHG (H26-1) Ignition switch ON 4.5 to 5.5 V NG: GO TO step 4 OK: Go to next step
2. INSPECT HEIGHT CONTROL SENSOR SUB-ASSEMBLY REAR RH Connect 3 dry cell batteries (1.5 V) in a series. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead from the battery to terminal 3. Measure the voltage between terminal 2 and terminal 3 when slowly moving the link up and down. Voltage VOLTAGE REFERENCE CHART Link Angle Standard voltage +45° (High) 4.5 V 0° (Normal) 2.5 V -45° (Low) 0.5 V NG: REPLACE HEIGHT CONTROL SENSOR SUB-ASSEMBLY REAR RH OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (AFS ECU - HEIGHT CONTROL SENSOR REAR RH) Disconnect the A14 connector from the AFS ECU. Disconnect the H26 connector from the height control sensor sub-assembly rear RH. Measure the resistance according to the value(s) in the following table. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition SHRL (A14-9) - SHRR (H26-2) Always Below 1 ohms SHRL (A14-9) - Body ground Always 10 kohms or higher Result RESULT CHART Condition Proceed to OK (When checking from the DTC) A OK (When checking from the PROBLEM SYMPTOMS TABLE) B NG C B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE C: REPAIR OR REPLACE HARNESS OR CONNECTOR A: REPLACE AFS ECU
4. INSPECT AFS ECU Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition SBR (A14-10) - SGR (A14-20) Ignition switch ON 4.5 to 5.5 V Result RESULT CHART Condition Proceed to OK A NG (When checking from the DTC) B NG (When checking from the PROBLEM SYMPTOMS TABLE) C B: REPLACE AFS ECU C: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE A: REPAIR OR REPLACE HARNESS OR CONNECTOR (AFS ECU - HEIGHT CONTROL SENSOR REAR RH)

The leveling actuator receives the signal from the AFS ECU to operate. The AFS ECU receives the signal regarding the operating conditions of the leveling actuator.

DTC DETECTING CONDITION CHART

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1. CHECK HARNESS AND CONNECTOR (HEADLIGHT BEAM LEVEL CONTROL MOTOR - AFS ECU) Disconnect the headlight connector of headlight beam level control motor side and AFS ECU connector. Measure the resistance according to the value(s) in the table below. Resistance: LH Side (B2417) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition LL2+ (H3-1) - LL2+ (A15-31) Always Below 1 ohms LL2- (H3-2) - LL2- (A15-32) Always Below 1 ohms LL1+ (H3-3) - LL1+ (A15-29) Always Below 1 ohms LL1- (H3-4) - LL1- (A15-30) Always Below 1 ohms LL1+ (A15-29) - Body ground Always 10 kohms or higher LL1- (A15-30) - Body ground Always 10 kohms or higher LL2+ (A15-31) - Body ground Always 10 kohms or higher LL2- (A15-32) - Body ground Always 10 kohms or higher RH Side (B2418) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition LR2+ (H7-1) - LR2+ (A15-15) Always Below 1 ohms LR2- (H7-2) - LR2- (A15-16) Always Below 1 ohms LR1+ (H7-3) - LR1+ (A15-13) Always Below 1 ohms LR1- (H7-4) - LR1- (A15-14) Always Below 1 ohms LR1+ (A15-13) - Body ground Always 10 kohms or higher LR1- (A15-14) - Body ground Always 10 kohms or higher LR2+ (A15-15) - Body ground Always 10 kohms or higher LR2- (A15-16) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. INSPECT HEADLIGHT BEAM LEVEL CONTROL MOTOR Disconnect the headlight connector of headlight beam level control motor side. Measure the resistance according to the value(s) in the table below. Resistance: LH Side (B2417) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition LL2+ (1) - LL2- (2) Always 5.8 to 12.5 ohms LL1+ (3) - LL1- (4) Always 5.8 to 12.5 ohms RH Side (B2418) TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition LR2+ (1) - LR2- (2) Always 5.8 to 12.5 ohms LR1+ (3) - LR1- (4) Always 5.8 to 12.5 ohms Result RESULT CHART Condition Proceed to OK (When checking from the DTC) A OK (When checking from the PROBLEM SYMPTOMS TABLE) B NG C B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE C: REPLACE HEADLIGHT BEAM LEVEL CONTROL MOTOR A: REPLACE AFS ECU

The AFS ECU receives the signal regarding lighting condition of the headlight, shift position signal of the transaxle, READY condition signal from HV control ECU and vehicle speed signal from the combination meter using multiplex communication.

When the DTC (B2419) is output, the other DTCs are output at the same time.

DTC DETECTING CONDITION CHART

When the AFS ECU detects a malfunction in itself, a DTC is output.

DTC DETECTING CONDITION CHART

This DTC is output when AFS ECU does not finish steering neutral point automatic correction. AFS operation is prohibited while this DTC is being output. This DTC is completed and AFS operation starts when AFS ECU records the steering neutral point correctly, if this DTC is not automatically erased, perform repair or replacement by following the procedures below.

DTC DETECTING CONDITION CHART

This DTC is output if the AFS ECU is not installed properly. (The AFS ECU for vehicles with coil suspension is installed on vehicles with air suspension.)

DTC DETECTING CONDITION CHART

This circuit detects the state of the ignition switch and sends it to the body ECU.

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1. READ VALUE OF INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the items below in the DATA LIST, and read the displays on the intelligent tester. BODY: NORMAL CONDITION CHART Item Measurement Item/ Display (Range) Normal Condition Diagnostic Note ACC SW ACC SW signal/ON or OFF ON: Ignition key is in ACC, ON or START position OFF: Ignition key is in OFF position - IG SW IG SW signal/ON or OFF ON: Ignition key is in ON or START position OFF: Ignition key is in OFF or ACC position - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT FUSE Inspect the ECU-ACC fuse, ECU-IG No.1 fuse and AM1 fuse in the instrument panel junction block assembly. Resistance: Below 1 ohms NG: REPLACE FUSE OK: Go to next step
3. INSPECT RELAY Inspect ACC relay continuity. Remove the ACC relay from the instrument panel J/ B. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified resistance 3 - 5 Always 10 kohms or higher 3 - 5 Apply B+ between the terminal 1 and 2 Below 1 ohms Inspect IG1 relay continuity. Remove the IG1 relay from the instrument panel J/ B. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified resistance 3 - 5 Always 10 kohms or higher 3 - 5 Apply B+ between the terminal 1 and 2 Below 1 ohms NG: REPLACE RELAY OK: Go to next step
4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (ACC, IG) Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1I-3 - Body ground Ignition switch is OFF --> ACC, ON Below 1 V --> 10 to 14 V 1I-9- Body ground Ignition switch is OFF --> ON Below 1 V --> 10 to 14 V NG: GO TO step 5 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
5. INSPECT JUNCTION BLOCK NO. 2 (POWER SOURCE CIRCUIT) Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Tester connection Condition Specified condition 1A-1 - Body ground Always 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) OK: Go to next step
6. INSPECT INSTRUMENT PANEL J/B ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1I-4 - Body ground Always 10 to 14 V NG: REPLACE INSTRUMENT PANEL J/B ASSEMBLY OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) Disconnect the 1F connector from the instrument panel junction block assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1F-10- Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. INSPECT IGNITION SWITCH Disconnect the ignition switch connector. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 2 - 3 Ignition switch OFF 10 kohms or higher 2 - 4 Ignition switch OFF 10 kohms or higher 2 - 3 Ignition switch ACC Below 1 ohms 2 - 4 Ignition switch ON Below 1 ohms NG: REPLACE IGNITION SWITCH OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - IGNITION SWITCH)

The body ECU controls the headlight relays. The headlight relays installed in the power distributor. System diagram of the power distributor (See «SYSTEM DIAGRAM» ).

System description of the power distributor (See «SYSTEM DESCRIPTION» ).

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1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER Connect the intelligent tester to DLC3. Turn the ignition switch to ON position and press the intelligent tester main switch ON. Select the item below in the ACTIVE TEST and then check that the relay operates. BODY BODY ITEM REFERENCE CHART Item Test Details Diagnostic Note HEAD LIGHT Turn Headlight relay ON/OFF - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) Disconnect the connector from the J/B No.2 (power distributor). Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2I-1 (+B) - Body ground Always 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK MODE MONITOR TERMINAL (H-LP R RELAY, H-LP L RELAY) Preparation Connect the connector. Remove the cover of the fusible link block assembly. Set the vehicle to the following condition. Ignition switch ON. Headlight dimmer switch LO. Check voltage Measure the voltage between the Mode Monitor Terminal and body ground. Voltage RESULT CHART Result Proceed to 0 V or Approx. 12 V A Approx. 6.2 V B Approx. 2.0 V C B: GO TO step 5 C: GO TO step 9 A: Go to next step
4. CHECK HARNESS AND CONNECTOR (J/B NO. 2 - MODE MONITOR TERMINAL) Disconnect the connector from the J/B No.2. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2G-5 - Mode monitor terminal Always Below 1 ohms 2G-5 - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT JUNCTION BLOCK NO.2 (HEAD LIGHT RELAY) Turn the ignition switch to OFF position. Remove the J/B No.2. Inspect the H-LP R. Connect the positive battery lead to terminal +B of the J/B No.2 and the negative lead to terminal SGND, PGND. SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection +B (2I-1) - SGND (2H-13), PGND (2F-1) Positive - Negative Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester Connection Specified Condition LPR (2A-3) - Battery negative terminal Below 1 V Connect the battery negative lead to terminal HRLY of the J/B No.2. SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection HRLY (2H-8) Negative Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester Connection Specified Condition LPR (2A-3) - Battery negative terminal 10 to 14 V Inspect the H-LP L. Connect the positive battery lead to terminal +B of the J/B No.2 and the negative lead to terminal SGND, PGND. SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection +B (2I-1) - SGND (2H-13), PGND (2F-1) Positive - Negative Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester Connection Specified Condition LPL (2A-2) - Battery negative terminal Below 1 V Connect the battery negative lead to terminal HRLY of the J/B No.2. Voltage SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection HRLY (2H-8) Negative Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester Connection Specified Condition LPL (2A-2) - Battery negative terminal 10 to 14 V NG: REPLACE JUNCTION BLOCK NO.2 OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (J/B NO. 2 - INSTRUMENT PANEL J/B) Disconnect the connectors from the J/B No.2 (power distributor) and instrument panel J/B. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2H-8 (HRLY) - 1D-3 Always Below 1 ohms 2H-8 (HRLY) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (J/B NO. 2 - HEADLIGHT ASSEMBLY) Disconnect the connectors from the J/B No.2 (power distributor) and headlight assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2A-2 (LPL) - H5-2 (Headlight LH) Always Below 1 ohms 2A-3 (LPR) - H9-2 (Headlight RH) Always Below 1 ohms 2A-2 (LPL) - Body ground Always 10 kohms or higher 2A-3 (LPR) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - BODY GROUND) Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value H5-1 (Headlight LH) - Body ground Always Below 1 ohms H9-1 (Headlight RH) - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
9. CHECK HARNESS AND CONNECTOR (SHORT CIRCUIT DRIVEN SIDE BY RELAY) Preparation For easier disconnection remove the J/B No.2 and then take apart the connectors. Disconnect only the connector "2A". Check voltage Measure the voltage between the Mode Monitor Terminal and body ground. Voltage RESULT CHART Result Proceed to Approx. 6.2 V A Approx. 2.0 V B B: REPLACE JUNCTION BLOCK NO.2 A: REPAIR OR REPLACE HARNESS OR CONNECTOR (SHORT CIRCUIT BETWEEN HEADLIGHT LO AND J/B NO.2)

The body ECU controls the DRL No.2, DRL No. 3 and DRL No.4 relays. The DRL No.2 and DRL No.4 relays installed in the power distributor.

System diagram of the power distributor (See «SYSTEM DIAGRAM» ).

System description of the power distributor (See «SYSTEM DESCRIPTION» ).

HINT

1. When the DRL No. 2, DRL No. 3, and DRL No. 4 relays are turned on, the high beam headlights come on.
2. When only DRL No. 2 relay is turned on, the daytime running lights (dimmed high beam headlights) come on.

Scheme 41

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Scheme 49

1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER Connect the intelligent tester to DLC3. Turn the ignition switch ON and push the intelligent tester main switch ON. Select the item below in the ACTIVE TEST and then check that the relay operates. BODY BODY ITEM REFERENCE CHART Item Test Details Diagnostic Note HEAD LIGHT (HI) Turn DRL No.2, DRL No. 3 and DRL No.4 relays ON/OFF - DRL Turn DRL No.2 relay ON/OFF - OK: High beam headlights come on. Daytime running lights (Dimmed high beam headlights) come on. NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT DAY TIME RUNNING LIGHT RELAY NO.3 (DRL NO. 3 RELAY) Inspect DRL No.3 relay continuity. Remove the relay from the relay block No. 3. Check the resistance between the each of the terminals as shown in the table below. Resistance TESTER SPECIFIED CONDITION REFERENCE CHART Terminal No. Specified condition 3 - 5 10 kohms or higher Below 1 ohms (When battery voltage is applied to terminals 1 and 2) 3 - 4 Below 1 ohms 10 kohms or higher (When battery voltage is applied to terminals 1 and 2) NG: REPLACE DAY TIME RUNNING LIGHT RELAY NO.3 OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) Disconnect the connector from the J/B No.2 (power distributor). Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2I -1 (+B) - Body ground Always 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK MODE MONITOR TERMINAL (DRL NO. 2, DRL NO. 4 RELAY) Preparation Connect the connector. Remove the cover of the fusible link block assembly. Set the vehicle to the following condition. Ignition switch ON. Headlight dimmer switch HI (FLASH). Check voltage Measure the voltage between the Mode Monitor Terminal and body ground. Voltage RESULT CHART Result Proceed to 0 V or Approx. 12 V A Approx. 6.2 V B Approx. 2.0 V C B: GO TO step 6 C: GO TO step 12 A: Go to next step
5. CHECK HARNESS AND CONNECTOR (J/B NO. 2 - MODE MONITOR TERMINAL) Disconnect the 2G connector from the J/B No.2. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2G-5 - Mode monitor terminal Always Below 1 ohms 26-5 - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. INSPECT JUNCTION BLOCK NO.2 (DRL NO. 2, DRL NO. 4 RELAY) Turn the ignition switch to OFF position. Remove the J/B No.2. Inspect the DRL No.2 relay. Connect the positive battery lead to terminal +B of the J/B No.2 and the negative lead to terminal SGND, PGND. SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection +B (2I-1) - SGND (2H-13), PGND (2F-1) Positive - Negative Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester Connection Specified Condition DRL2 (2I-2) - Battery negative terminal Below 1 V Connect the battery negative lead to terminal DRL of the J/B No.2. SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection DRL (2H-7) Negative Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester Connection Specified Condition DRL2 (2I-2) - Battery negative terminal 10 to 14 V Inspect the DRL No.4 relay. Connect terminal HRE and DRL with wire. SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection HRE (2G-10) - DRL (2H-7) Using wire harness Connect the positive battery lead to terminal +B of the J/B No.2 and the negative lead to terminal SGND, PGND. SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection +B (2I-1) - SGND (2H-13), PGND (2F-1) Positive - Negative Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester Connection Specified Condition DRL2 (2I-2) - Battery negative terminal Below 1 V Connect the battery negative lead to terminal HRLY of the J/B No.2. SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection HRLY (2H-8) Negative Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester Connection Specified Condition DRL2 (2I-2) - Battery negative terminal 10 to 14 V NG: REPLACE JUNCTION BLOCK NO.2 OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (J/B NO. 2 - INSTRUMENT PANEL J/B) Disconnect the connectors from the instrument panel J/ B. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2H-7 (DRL) - 1D-9 Always Below 1 ohms 2H-7 (DRL) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (J/B NO. 2 - BULB) Disconnect the connectors from the J/B No.2 (power distributor) and headlight bulb. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 21-2 (DRL2) - H4-2 (Headlight LH) Always Below 1 ohms 21-2 (DRL2) - body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (BULB - J/B NO. 2) Disconnect the connectors from the J/B No.2 (power distributor). Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2G-11 (HLE) - H4-1 (Headlight LH) Always Below 1 ohms 2G-11 (HLE) - Body ground Always 10 kohms or higher 2G-10 (HRE) - H8-1 (Headlight RH) Always Below 1 ohms 2G-10 (HRE) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (BULB - BODY GROUND) Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value H8-2 (Headlight RH) - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (J/B NO. 2 - RELAY BLOCK NO. 3) Remove the DRL No.3 relay from the relay block No.3. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2I-2 (DRL2) - 5 (Relay block No.3) Always Below 1 ohms 21-2 (DRL2) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
12. CHECK MODE MONITOR TERMINAL (SHORT CIRCUIT DRIVEN SIDE BY RELAY) Disconnect the 2I connector from the J/B No.2. Connect the battery positive lead to terminal 2I-1 on the J/B side and negative lead to the body ground. Check voltage Measure the voltage between the Mode Monitor Terminal and body ground. Voltage RESULT CHART Result Proceed to Approx. 6.2 V A Approx. 2 V B B: REPLACE JUNCTION BLOCK NO.2 A: REPAIR OR REPLACE HARNESS OR CONNECTOR (SHORT CIRCUIT DRIVEN SIDE BY RELAY)

The body ECU controls FOG relay when signal is received from headlight dimmer switch assembly.

Scheme 50

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Scheme 54

1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER Connect the intelligent tester to DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the item below in the ACTIVE TEST and then check that the relay operates. BODY BODY ITEM REFERENCE CHART Item Test Details Diagnostic Note F FOG LIGHT RLY Turn Front fog light relay ON/OFF - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT FUSE Inspect the FR FOG fuse and TAIL fuse in the instrument panel junction block assembly. Resistance: Below 1 ohms NG: REPLACE FUSE OK: Go to next step
3. INSPECT RELAY Inspect fog light relay continuity. Remove the fog light relay from the instrument panel J/B assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED RESISTANCE CHART Tester connection Condition Specified resistance 3 - 5 Always 10 kohms or higher 3 - 5 Apply B+ between the terminal 1 and 2 Below 1 ohms Inspect tail relay continuity. Remove the tail relay from the instrument panel J/B assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED RESISTANCE CHART Tester connection Condition Specified resistance 3 - 5 Always 10 kohms or higher 3 - 5 Apply B+ between the terminal 1 and 2 Below 1 ohms NG: REPLACE RELAY OK: Go to next step
4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (POWER SOURCE CIRCUIT) Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1A-1 - Body ground Always 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) OK: Go to next step
5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1C-1 - Body ground Light control switch TAIL and Front fog light switch OFF --> ON Below 1 V --> 10 to 14 V 1D-5- Body ground Light control switch TAIL and Front fog light switch OFF --> ON Below 1 V --> 10 to 14 V NG: GO TO step 6 OK: REPAIR OR REPLACE HARNESS OR CONNECTOR
6. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1L-3- Body ground Light control switch OFF --> TAIL Below 1 V --> 10 to 14 V NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE OK: Go to next step
7. CHECK HARNESS AND CONNECTOR Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1L-4- Body ground Light control switch OFF --> TAIL Below 1 V --> 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
8. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1I-8- Body ground Light control switch OFF --> TAIL Below 1 V --> 10 to 14 V NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OK: Go to next step
9. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU INSTRUMENT PANEL JUNCTION BLOCK) Disconnect the B7 connector of multiplex network body ECU and the 1I connector of the instrument panel junction block assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition B7-7 - 1I-8 Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

The HV control ECU receives shift position R signal and controls the back-up light relay. The back-up light relay installed in the power distributor.

System diagram of the power distributor (See «SYSTEM DIAGRAM» ).

System description of the power distributor (See «SYSTEM DESCRIPTION» ).

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Scheme 61

1. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) Disconnect the connector from the J/B No.2 (power distributor). Measure the voltage according to the value(s) in the table below. Voltage VOLTAGE REFERENCE CHART Tester connection Condition Specified value BUB (2F-3) - Body ground Ignition switch ON 10 to 14 V BUB (2F-3) - Body ground Ignition switch OFF Below 1 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK MODE MONITOR TERMINAL (BACK-UP RELAY) Preparation Connect the connector. Remove the cover of the fusible link block assembly. Set the vehicle to the following condition. Ignition switch ON. Shift in R position. Check voltage Measure the voltage between the Mode Monitor Terminal and body ground. Voltage RESULT CHART Result Proceed to 0 V or Approx. 12V A Approx. 6.2 V B Approx. 2.0 V C B: GO TO step 4 C: GO TO step 8 A: Go to next step
3. CHECK HARNESS AND CONNECTOR (J/B NO. 2 - MODE MONITOR TERMINAL) Disconnect the 2G connector from the J/B No.2. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2G-5 - Mode monitor terminal Always Below 1 ohms 2G-5 - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT JUNCTION BLOCK NO.2 (BACK-UP RELAY) Turn the ignition switch to OFF position. Remove the J/B No.2. Inspect the back-up relay. Connect the positive battery lead to terminal BUB of the J/B No.2 and the negative lead to terminal SGND, PGND. SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection BUB (2F-3) - SGND (2H-13), PGND (2F-1) Positive - Negative Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester Connection Specified Condition BUL (2E-1) - SGND (2H-13) 0 V Connect the battery positive lead to terminal BKR of the J/B No.2. SYMBOL CONNECTION REFERENCE CHART Symbols (terminals No.) Connection BKR (2G-7) Positive Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester Connection Specified Condition BUL (2E-1) - SGND (2H-13) 10 to 14 V NG: REPLACE JUNCTION BLOCK NO.2 OK: Go to next step
5. CHECK HARNESS AND CONNECTOR (J/B NO. 2 - HV CONTROL ECU) Disconnect the connector from the J/B No.2 (power distributor) and HV control ECU. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2G-7 (BKR) - H30-29 (BL) Always Below 1 ohms 2G-7 (BKR) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK HARNESS AND CONNECTOR (J/B NO. 2 - BULB) Disconnect the connectors from the J/B No.2 (power distributor) and back-up light bulbs. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value 2E-1 (BUL) - B14-2 (Back-up light LH) Always Below 1 ohms 2E-1 (BUL) - B15-2 (Back-up light RH) Always Below 1 ohms 2E-1 (BUL)- Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. CHECK HARNESS AND CONNECTOR (BULB - BODY GROUND) Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED VALUE REFERENCE CHART Tester connection Condition Specified value B14-1 (Back-up light LH) - Body ground Always Below 1 ohms B15-1 (Back-up light RH) - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
8. CHECK HARNESS AND CONNECTOR (SHORT CIRCUIT DRIVEN SIDE BY RELAY) Preparation For easier disconnection remove the J/B No.2 and then take apart the connectors. Disconnect only the connector "2E". Check voltage Measure the voltage between the Mode Monitor Terminal and body ground. Voltage RESULT CHART Result Proceed to Approx. 6.2 V A Approx. 2.0 V B B: REPLACE JUNCTION BLOCK NO.2 OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (SHORT CIRCUIT BETWEEN BACK-UP LIGHT AND J/B NO. 2)

This circuit detects the state of the headlight dimmer switch.

Scheme 62

Scheme 63

1. READ VALUE OF INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the items below in the DATA LIST, and read the displays on the intelligent tester. BODY NORMAL CONDITION CHART Item Measurement/ Display (Range) Normal Condition Diagnostic Note DIMMER SW Headlight dimmer SW signal/ON or OFF ON: Headlight dimmer switch is in HI or FLASH position OFF: Headlight dimmer switch is in LO position - HIGH FLASHER SW Headlight dimmer SW signal/ON or OFF ON: Headlight dimmer switch is in FLASH position OFF: Headlight dimmer switch is in except FLASH position - F FOG LIGHT SW Front fog light SW signal/ON or OFF ON: Front fog light switch is in ON position OFF: Front fog light switch is OFF position - AUTO LIGHT SW Auto light SW signal/ ON or OFF ON: Headlight dimmer switch is in AUTO position OFF: Headlight dimmer switch is in except AUTO position - HEAD LIGHT SW Head light control SW signal/ON or OFF ON: Light control switch is in HEAD position OFF: Light control switch is in except HEAD position - TAIL LIGHT SW Taillight SW signal/ON or OFF ON: Light control switch is in TAIL or HEAD position OFF: Light control switch is in OFF position - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY Inspect the headlight dimmer switch assembly (See «INSPECTION» ). NG: REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY OK: Go to next step
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1N-2 - Body ground Headlight dimmer switch LOW --> HIGH 10 to 14 V --> Below 1 V B4-15 - Body ground Headlight dimmer switch LOW --> FLASH 10 to 14 V --> Below 1 V B4-16 - Body ground Light control switch OFF --> AUTO 10 to 14 V --> Below 1 V B4-17 - Body ground Light control switch OFF --> TAIL 10 to 14 V --> Below 1 V B4-22 - Body ground Front fog light switch OFF --> ON 10 to 14 V --> Below 1 V B4-23 - Body ground Light control switch OFF --> HEAD 10 to 14 V --> Below 1 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

The body ECU receives the signal from the automatic light control sensor.

Scheme 64

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1. READ VALUE OF INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the items below in the DATA LIST, and read the displays on the intelligent tester. BODY NORMAL CONDITION CHART Item Measurement Item/ Display (Range) Normal Condition Diagnostic Note ILLUMINATE RATE Illuminate rate/(0.8 ms to 22.0 ms) Value is output according to ambient light - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU -AUTOMATIC LIGHT CONTROL SENSOR) Disconnect the automatic light control sensor connector and multiplex network body ECU connector. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition CLTE (A10-3) - CLTE (B4-4) Always Below 1 ohms CLTS (A10-5) - CLTS (B4-5) Always Below 1 ohms CLTB (A10-6) - CLTB (B4-6) Always Below 1 ohms CLTE (B4-4) - Body ground Always 10 kohms or higher CLTS (B4-5) - Body ground Always 10 kohms or higher CLTB (B4-6) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED VOLTAGE REFERENCE CHART Tester connection Condition Specified voltage CLTE (B4-4) - CLTB (B4-6) Ignition switch OFF --> ON Below 1 V --> 10 to 14 V NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE OK: REPLACE AUTOMATIC LIGHT CONTROL SENSOR

The body ECU detects the condition of the door courtesy switch assembly.

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1. READ VALUE OF INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the items below in the DATA LIST, and read the displays on the intelligent tester. BODY NORMAL CONDITION CHART Item Measurement Item/ Display (Range) Normal Condition Diagnostic Note D DOR CTY SW Driver's door courtesy SW signal/ON or OFF OK ON: Driver's door is open OFF: Driver's door is closed - P DOR CYT SW Passenger's door courtesy SW signal/ON or OFF ON: Front passenger door is open OFF: Front passenger door is closed - Rr DOR CTY SW Rear slide door courtesy SW signal/ON or OFF ON: Either right or left rear door is open OFF: Both the right and left doors are closed - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT COURTESY LIGHT SWITCH Inspect front door courtesy switch (See «FRONT DOOR COURTESY SWITCH» ). Inspect rear door courtesy switch (See «REAR DOOR COURTESY SWITCH» ). NG: REPLACE COURTESY LIGHT SWITCH OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (COURTESY LIGHT SWITCH - INSTRUMENT PANEL J/B ASSEMBLY) Disconnect the 1O, B5 and B6 connectors from the instrument panel junction block assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition B6-14 - Body ground Front driver door is OPEN Front driver door is CLOSE Below 1 ohms 10 kohms or higher B5-23 - Body ground Front passenger door is OPEN Front passenger door is CLOSE Below 1 ohms 10 kohms or higher 10-7 - Body ground Rear LH door is OPEN Rear LH door is CLOSE Below 1 ohms 10 kohms or higher B6-16 - Body ground Rear RH door is OPEN Rear RH door is CLOSE Below 1 ohms 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

This circuit detects the state of the door lock detection switch and send it to the multiplex network body ECU.

Scheme 68

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1. READ VALUE OF INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the items below in the DATA LIST, and read the displays on the intelligent tester. BODY NORMAL CONDITION CHART Item Measurement Item/ Display (Range) Normal Condition Diagnostic Note P LOCK POS SW Front passenger's door lock position SW signal/ON or OFF ON: Front passenger's door lock is in unlock position OFF: Front passenger's door lock is in lock position - Rr. LOCK POS SW Rear slide door lock position SW signal/ON or OFF ON: Rear slide door lock is in unlock position OFF: Rear slide door lock is in lock position - D LOCK POS SW Driver's door lock position SW signal/ON or OFF ON: Door lock is in unlock position OFF: Door lock is in lock position - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition P22-16 - Body ground Driver side door is lock --> unlock Below 1 V --> 10 to 14 V Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1P-5 - Body ground Rear LH door is lock --> unlock Below 1 V --> Pulse generation (*1) B5-5 - Body ground Rear RH door is lock --> unlock Below 1 V --> Pulse generation (*1) B5-27 - Body ground Front passenger door is lock --> unlock Below 1 V --> 10 to 14 V *1: Oscilloscope wave HINT: Gauge set: 5 V/DIV. 5 ms/DIV Condition: Ignition switch ON NG: GO TO «POWER DOOR LOCK CONTROL SYSTEM» OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

The body ECU controls the overhead console illumination light.

Scheme 71

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1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the items below in the ACTIVE TEST, and then check that the light comes on. BODY TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Item Test Details Diagnostic Note CONSOLE LIGHT Center console illumination ON/OFF - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT PERSONAL LIGHT ASSEMBLY Disconnect the overhead junction block connector. Connect the positive (+) lead from the battery to the terminal 13 and negative (-) lead from the battery to the terminal 4. Inspect the overhead console illumination light comes on. NG: REPLACE PERSONAL LIGHT ASSEMBLY OK: Go to next step
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition B5-14 - Body ground All door is closed --> Front or rear door is open 10 to 14 V --> Below 1 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

The body ECU receives information regarding the door lock position switch and ignition switch, and turns on each inside handle illumination. It also receives shift position information and controls the illumination.

Scheme 74

The body ECU receives information regarding the door lock position switch and ignition switch, and turns on each step light. It also receives shift position information and controls the illumination.

Scheme 75

The body ECU controls the illumination light as shown below.

1. Ignition key cylinder light
2. Scuff plate illumination
3. Front room light

Scheme 76

Scheme 77

1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the items below in the ACTIVE TEST and then check that the relay operates. BODY BODY ITEM REFERENCE CHART Item Test Details Diagnostic Note ILLUMI OUTPUT (Test Details) Turn Interior light and Key illumination ON/OFF (Vehicle Condition) Interior light SW is in Door position and all doors are closed - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT INTERIOR LIGHT Inspect ignition key cylinder light (See «IGNITION KEY CYLINDER LIGHT» ). Inspect scuff plate illumination (See «SCUFF PLATE LIGHT» ). Inspect front room light (See «FRONT ROOM LIGHT ASSEMBLY» ). NG: REPLACE INTERIOR LIGHT OK: Go to next step
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1I-10 - Body ground All door is closed --> Front or rear door is open 10 to 14 V --> Below 1 V 1M-1 - Body ground All door is closed --> Front or rear door is open 10 to 14 V --> Below 1 V 1R-5- Body ground All door is closed --> Front or rear door is open 10 to 14 V --> Below 1 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

The Multiplex network body ECU receives the parking brake switch signal.

Scheme 78

Scheme 79

1. READ VALUE OF INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the items below in the DATA LIST, and read the displays on the intelligent tester. BODY NORMAL CONDITION CHART Item Measurement Item/ Display (Range) Normal Condition Diagnostic Note PARKING BRAKE SW Parking brake SW signal/ON or OFF ON: Parking brake switch is ON OFF: Parking brake switch is OFF - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT PARKING BRAKE SWITCH ASSEMBLY Disconnect the parking brake switch connector. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1 - Body ground Shaft is pressed 10 kohms or higher 1 - Body ground Shaft is not pressed Below 1 ohms NG: REPLACE PARKING BRAKE SWITCH ASSEMBLY OK: Go to next step
3. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) Disconnect the 1C connector from instrument panel junction block assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1C-14 - Body ground Shaft of parking brake switch is pressed 10 kohms or higher 1C-14 - Body ground Shaft of parking brake switch is not pressed Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

The body ECU controls TAIL relay when the signal is received from the headlight dimmer switch assembly.

Scheme 80

Scheme 81

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Scheme 83

Scheme 84

1. PERFORM ACTIVE TEST BY INTELLIGENT TESTER Connect the intelligent tester to the DLC3. Turn the ignition switch to the ON position and press the intelligent tester main switch ON. Select the items below in the ACTIVE TEST and then check that the relay operates. BODY BODY ITEM REFERENCE CHART Item Test Details Diagnostic Note TAIL LIGHT Turn Tail light relay ON/OFF - NG: GO TO step 2 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT FUSE Inspect TAIL fuse and GAUGE No.1 fuse in the instrument panel junction block assembly. Resistance: Below 1 ohms NG: REPLACE FUSE OK: Go to next step
3. INSPECT RELAY Inspect TAIL relay continuity. Remove the TAIL relay from the instrument panel J/B assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 3 - 5 Always 10 kohms or higher 3 - 5 Apply B+ between the terminal 1 and 2 Below 1 ohms NG: REPLACE RELAY OK: Go to next step
4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (POWER SOURCE CIRCUIT) Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1A-1 - Body ground Always 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) OK: Go to next step
5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1C-4 - Body ground Light control switch OFF --> TAIL Below 1 V --> 10 to 14 V 1C-5 - Body ground Light control switch OFF --> TAIL Below 1 V --> 10 to 14 V 1D-6 - Body ground Light control switch OFF --> TAIL Below 1 V --> 10 to 14 V 1D-14 - Body ground Light control switch OFF --> TAIL Below 1 V --> 10 to 14 V 1P-8 - Body ground Light control switch OFF --> TAIL Below 1 V --> 10 to 14 V 1O-9 - Body ground Ignition switch ON Below 1V --> 10 to 14 V NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE OK: Go to next step
6. INSPECT REAR JUNCTION BLOCK Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 5B-7 - Body ground Ignition switch OFF --> ON Below 1 V --> 10 to 14 V 5C-15 - Body ground Light control switch OFF --> TAIL Below 1 V --> 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - REAR JUNCTION BLOCK) OK: Go to next step
7. INSPECT REAR JUNCTION BLOCK Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 5C-16 - Body ground Headlight dimmer switch OFF --> TAIL Below 1 V --> 10 to 14 V 5D-5 - Body ground Headlight dimmer switch OFF --> TAIL Below 1 V --> 10 to 14 V 5D-9 - Body ground Headlight dimmer switch OFF --> TAIL Below 1 V --> 10 to 14 V 5D-10 - Body ground Headlight dimmer switch OFF --> TAIL Below 1 V --> 10 to 14 V 5D-11 - Body ground Headlight dimmer switch OFF --> TAIL Below 1 V --> 10 to 14 V NG: REPLACE REAR JUNCTION BLOCK OK: REPAIR OR REPLACE HARNESS OR CONNECTOR

Body ECU sends signals that the headlight is ON and the daytime running light is on to the headlight beam level control ECU and operates the headlight beam level control system.

Headlight beam level control ECU receives the vehicle speed signal from the skid control ECU.

Scheme 85

Scheme 86

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Scheme 88

1. CHECK HARNESS AND LEVEL CONTROL ECU) CONNECTOR (INSTRUMENT PANEL J/B - HEADLIGHT BEAM Disconnect the 1D connector of instrument panel junction block assembly and the H17 connector of headlight beam level control ECU. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1D-3 - H17-7 Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - HEADLIGHT BEAM LEVEL CONTROL ECU) Disconnect the connectors from the skid control ECU and the headlight beam level control ECU. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition S40-33 (RRO) - H17-6 (SPDR) Always Below 1 ohms S39-25 (RLO) - H17-5 (SPDL) Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

This circuit provides power to operate the headlight beam level control ECU.

Scheme 89

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Scheme 91

1. INSPECT FUSE Inspect the ECU-IG No.2 fuse in the instrument panel junction block assembly. Resistance: Below 1 ohms NG: REPLACE FUSE OK: Go to next step
2. INSPECT RELAY Inspect IG1 relay continuity. Remove the IG1 relay from the instrument panel J/B assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED RESISTANCE CHART Tester connection Condition Specified resistance 3 - 5 Always 10 kohms or higher 3 - 5 Apply B+ between the terminal 1 and 2 Below 1 ohms NG: REPLACE RELAY OK: Go to next step
3. INSPECT HEADLIGHT BEAM LEVEL CONTROL ECU Disconnect the H17 connector of headlight beam level control ECU. Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition H17-14 (IG) - H17-1 (GND) Ignition switch OFF --> ON Below 1 V --> 1o to 14 V NG: GO TO step 4 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
4. CHECK HARNESS AND CONNECTOR (HEADLIGHT BEAM LEVEL CONTROL ECU BODY GROUND) Disconnect the H17 connector of headlight beam level control ECU. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition H17-1 (GND) - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (POWER SOURCE CIRCUIT) Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1A-1 - Body ground Always 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - INSTRUMENT PANEL J/B ASSEMBLY) OK: Go to next step
6. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1F-19- Body ground Ignition switch OFF --> ON Below 1V --> 10 to 14 V NG: GO TO step 7 OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY -LEVEL CONTROL ECU)
7. INSPECT IGNITION SWITCH Disconnect the ignition switch connector. Measure the resistance according to the value(s) in the table below. Resistance SYMBOL CONNECTION REFERENCE CHART Tester connection Condition Specified resistance 2 - 4 Ignition switch OFF 10 kohms or higher 2 - 4 Ignition switch ON Below 1 ohms NG: REPLACE IGNITION SWITCH OK: Go to next step
8. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1I-4 - Body ground Always 10 to 14 V NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY OK: Go to next step
9. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1I-9 - Body ground Ignition switch OFF --> ON Below 1 V --> 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - BODY GROUND) Disconnect the 1F connector from the instrument panel junction block assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1F-10 - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

The headlight beam level control ECU receives the height control sensor signal from the height control sensor sub-assembly.

The headlight beam level control ECU calculates a height value from the height control signal. The voltage at the power source of the height control sensor is corrected when SHR is detected.

Scheme 92

Scheme 93

1. INSPECT HEIGHT CONTROL SENSOR SUB-ASSEMBLY REAR RH Connect 3 dry cell batteries (1.5 V) in a series. Connect the positive (+) lead from the battery to terminal 1 and negative (-) lead from the battery to terminal 3. Measure voltage between terminal 2 and terminal 3 when slowly move the link up and down. Voltage VOLTAGE REFERENCE CHART Link Angle Standard voltage +45° (High) 4.5 V 0° (Normal) 2.5 V -45° (Low) 0.5 V NG: REPLACE HEIGHT CONTROL SENSOR SUB-ASSEMBLY REAR RH OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (HEIGHT CONTROL SENSOR REAR RH - LEVEL CONTROL ECU) Disconnect the H26 connector of height control sensor sub-assembly and the H17 connector of headlight leveling ECU assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition H17-16 (SGR) - H26-1 (SHG) Always Below 1 ohms H17-18 (SHR) - H26-2 (SHRR) Always Below 1 ohms H17-20 (SBR) - H26-3 (SHB) Always Below 1 ohms H26-1 (SHG) - Body ground Always 10 kohms or higher H26-2 (SHRR) - Body ground Always 10 kohms or higher H26-3 (SHB) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

When the actuator is received a signal from the headlight beam level control ECU, the step motor is activated and the angle of the reflector in the headlight will be adjusted.

Scheme 94

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Scheme 98

1. INSPECT HEADLIGHT BEAM LEVEL CONTROL MOTOR LH Disconnect the connector from headlight beam level control motor LH. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1 (LH2) - 5 (LHB1) Always 26 to 30 ohms 3 (LH4) - 5 (LHB1) Always 26 to 30 ohms 4 (LH1) - 5 (LHB1) Always 26 to 30 ohms 6 (LH3) - 5 (LHB1) Always 26 to 30 ohms NG: REPLACE HEADLIGHT BEAM LEVEL CONTROL MOTOR LH OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (LEVEL CONTROL MOTOR LH - LEVEL CONTROL ECU) Disconnect the H3 connector of headlight beam level control motor LH and the H17 connector of the headlight beam level control ECU. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition H3-1 (LH2) - H17-26 (LH2) Always Below 1 ohms H3-3 (LH4) - H17-25 (LH4) Always Below 1 ohms H3-4 (LH1) - H17-24 (LH1) Always Below 1 ohms H3-5 (LHB1) - H17-22 (LHG) Always Below 1 ohms H3-6 (LH3) - H17-23 (LH3) Always Below 1 ohms H17-26 (LH2) - Body ground Always 10 kohms or higher H17-2S (LH4) - Body ground Always 10 kohms or higher H17-24 (LH1) - Body ground Always 10 kohms or higher H17-22 (LHG) - Body ground Always 10 kohms or higher H17-23 (LH3) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT HEADLIGHT BEAM LEVEL CONTROL MOTOR RH Disconnect the connector from headlight leveling motor RH. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1 (RH2) - 5 (RHB1) Always 26 to 30 ohms 3 (RH4) - 5 (RHB1) Always 26 to 30 ohms 4 (RH1) - 5 (RHB1) Always 26 to 30 ohms 6 (RH3) - 5 (RHB1) Always 26 to 30 ohms NG: REPLACE HEADLIGHT BEAM LEVEL CONTROL MOTOR RH OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (LEVEL CONTROL MOTOR RH - LEVEL CONTROL ECU) Disconnect the H7 connector of headlight beam level control motor RH and the H17 connector of the headlight beam level control ECU. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition H7-1 (RH2) - H17-13(RH2) Always Below 1 ohms H7-3 (RH4) - H17-12 (RH4) Always Below 1 ohms H7-4 (RH1) - H17-11 (RH1) Always Below 1 ohms H7-5 (RHB1) - H17-9 (RHG) Always Below 1 ohms H7-6 (RH3) - H17-10 (RH3) Always Below 1 ohms H17-13 (RH2) - Body ground Always 10 kohms or higher H17-12 (RH4) - Body ground Always 10 kohms or higher H17-11 (RH1) - Body ground Always 10 kohms or higher H17-9 (RHG) - Body ground Always 10 kohms or higher H17-10 (RH3) - Body ground Always 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

This circuit detects the state of the ignition switch and send it to the AFS ECU.

Scheme 99

Scheme 100

Scheme 101

1. INSPECT FUSE Inspect the ECU-IG No.2 fuse and AM1 fuse in the instrument panel junction block assembly. Resistance: Below 1 ohms NG: REPLACE FUSE OK: Go to next step
2. INSPECT RELAY Remove the IG1 relay from the instrument panel J/B assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified resistance 3 - 5 Always 10 kohms or higher 3 - 5 Apply B+ between the terminal 1 and 2 Below 1 ohms NG: REPLACE RELAY OK: Go to next step
3. INSPECT AFS ECU Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition A14-2 (IG) - A14-1 (E1) Ignition switch OFF --> ON Below 1 V --> 10 to 14 V A14-12 (IGS) - A14-1 (E1) Ignition switch OFF --> ON Below 1 V --> 10 to 14 V NG: GO TO step 4 OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
4. CHECK HARNESS AND CONNECTOR (AFS ECU - BODY GROUND) Disconnect the A14 connector from headlight swivel ECU assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition A14-1 (E1) - Body ground Always Below 1 ohms A14-11 (E1S) - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT INSTRUMENT PANEL J/B ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1F-19- Body ground Ignition switch OFF --> ON Below 1 V --> 10 to 14 V NG: GO TO step 6 OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - AFS ECU)
6. INSPECT INSTRUMENT PANEL J/B ASSEMBLY (POWER SOURCE CIRCUIT) Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1A-1 - Body ground Always 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - INSTRUMENT PANEL J/B ASSEMBLY) OK: Go to next step
7. INSPECT IGNITION SWITCH Disconnect the ignition switch connector. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 2 - 4 Ignition switch OFF 10 kohms or higher 2 - 4 Ignition switch ON Below 1 ohms NG: REPLACE IGNITION SWITCH OK: Go to next step
8. INSPECT INSTRUMENT PANEL J/B ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1I-4 - Body ground Always 10 to 14 V NG: REPLACE INSTRUMENT PANEL J/B ASSEMBLY OK: Go to next step
9. INSPECT INSTRUMENT PANEL J/B ASSEMBLY Measure the voltage according to the value(s) in the table below. Voltage TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1I-9 - Body ground Ignition switch OFF --> ON Below 1 V --> 10 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL J/B ASSEMBLY - BODY GROUND) Disconnect the 1F connector from the instrument panel junction block assembly. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition 1F-10 - Body ground Always Below 1 ohms NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: REPLACE INSTRUMENT PANEL J/B ASSEMBLY

The AFS ECU receives a signal from the AFS OFF switch.

Scheme 102

Scheme 103

1. INSPECT AFS OFF SWITCH Disconnect the AFS OFF switch connector. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED RESISTANCE CHART Tester connection Condition Specified resistance 1 - 2 AFS OFF switch is pushed Below 1 ohms 1 - -2 AFS OFF switch is not pushed 10 kohms or higher NG: REPLACE AFS OFF SWITCH OK: Go to next step
2. INSPECT AFS ECU Disconnect the AFS ECU connector. Measure the resistance according to the value(s) in the table below. Resistance TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART Tester connection Condition Specified condition A14-4 - Body ground AFS OFF switch is pushed Below 1 ohms A14-4 - Body ground AFS OFF switch is not pushed 10 kohms or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Scheme 104

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Scheme 111

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL (for HID Headlight)
2. REMOVE FRONT BUMPER STAY CENTER (See «REMOVAL» )
3. REMOVE FRONT BUMPER ASSEMBLY (See «REMOVAL» )
4. REMOVE HEADLIGHT ASSEMBLY (for Halogen Headlight) Remove the 3 bolts. Pull out the headlight assembly forward, then release the headlight mounting bracket. Disconnect the connectors and clamp, remove the headlight assembly.
5. REMOVE HEADLIGHT ASSEMBLY (for HID Headlight) Remove the 4 bolts. Pull out the headlight assembly forward, then release the headlight bracket. Disconnect the connectors and clamp, remove the headlight assembly.
6. REMOVE FRONT NO. 2 BUMPER SIDE SUPPORT Using needle nose pliers, release the 2 claw fittings and remove the front No. 2 bumper side support from the headlight assembly.

Scheme 112

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Scheme 127

1. REMOVE NO. 2 HEADLIGHT BULB Remove the No. 2 headlight bulb as shown in the illustration.
2. REMOVE HEADLIGHT SOCKET COVER Separate the headlight socket cover as shown in the illustration. Remove the headlight socket cover from the headlight cord.
3. REMOVE NO. 1 HEADLIGHT BULB (for Halogen Headlight) Remove the No. 1 headlight bulb as shown in the illustration.
4. REMOVE NO. 1 HEADLIGHT BULB (for HID Headlight) Separate the light control ECU socket as shown in the illustration. Release the set spring and remove the No. 1 headlight bulb.
5. REMOVE FRONT TURN SIGNAL LIGHT BULB Turn in the direction indicated by the arrow and remove the front turn signal light bulb and the front turn signal light socket as a unit. Remove the front turn signal light bulb from the front turn signal light socket.
6. REMOVE FRONT SIDE MARKER LIGHT BULB Turn the front side marker light bulb and the front side marker light socket and wire in the direction indicated by the arrow and remove them as a unit. Remove the front side marker light bulb from the front side marker light socket and wire.
7. REMOVE CLEARANCE LIGHT BULB Turn the clearance light bulb and the clearance light socket and wire in the direction indicated by the arrow and remove them as a unit. Remove the clearance light bulb from the clearance light socket and wire.
8. REMOVE LIGHT CONTROL ECU SUB-ASSEMBLY (for HID Headlight without AFS) Remove the 4 screws. Disconnect the light control ECU sub-assembly and the No. 1 headlight cover. Remove the 3 screws, the light control ECU sub-assembly and the headlight cord. Disconnect the connector and remove the headlight cord. Remove the headlight fitting and the light control ECU sub-assembly.
9. REMOVE LIGHT CONTROL ECU SUB-ASSEMBLY (for HID Headlight with AFS) Remove the 2 screws and the cover. Remove the 2 screws and the headlight bracket. Remove the 4 screws. Disconnect the light control ECU sub-assembly and the No. 1 headlight cover. Remove the 3 screws, the light control ECU sub-assembly and the headlight cord. Disconnect the connector and remove the headlight cord. Remove the headlight fitting and the light control ECU sub-assembly.
10. REMOVE HEADLIGHT GASKET (for HID Headlight) Remove the headlight gasket. NOTE: After the headlight gasket is removed, be sure to replace it with a new one. Failure to do this may cause water ingress.
11. REMOVE HEADLIGHT LEVELING MOTOR (for HID Headlight) Align the notches of the headlight leveling motor and the housing, and pull out the headlight leveling motor slightly. Lower the tip of the headlight leveling motor to disengage it from the reflector and remove the headlight leveling motor.
12. REMOVE HEADLIGHT LEVELING MOTOR BASE PACKING (for HID Headlight) Remove the headlight leveling motor base packing. NOTE: After the headlight leveling motor base packing is removed, be sure to replace it with a new one. Failure to do this may cause water ingress.
13. REMOVE HEADLIGHT SWIVEL ECU SUB-ASSEMBLY (for HID Headlight with AFS) Disconnect the connector. Remove the screw and the headlight swivel ECU sub-assembly.
14. REMOVE LIGHT REFLECTOR MOTOR (for HID Headlight with AFS) Disconnect the connector. Remove the 2 screws and light reflector motor.

See also:
• DTC P0705-757 Transmission Range Sensor Circuit; DTC P0705-758 Transmission Range Sensor Circuit; DTC P0851-775 Park / Neutral Switch Input Circuit Low
• REMOVAL
• AIRBAG SYSTEM
• REMOVAL