Lighting System - Diagnostics: Other Lexus GX J120

CUSTOMIZE PARAMETERS

HINT

The following items can be customized.

Note. Be sure to record the current value before customizing. In case of performing the troubleshooting, pay attention as there is a possibility that the function is OFF by customizing. (Example: In case of the symptom in which "The wireless operation does not function", check that the wireless operation is not OFF by customizing, then perform the troubleshooting.)

Scheme 69

LIGHT CONTROL

HINT

Sensitivity adjustment can hardly be confirmed. Please check by customer's actual driving.

Scheme 70

Illustration of *1

Scheme 71

Illustration of *2

Scheme 72

Illustration of *3

Scheme 73

Scheme 74

1. DTC CHECK If a malfunction code is displayed during the DTC check, check the suspected area, and proceed to the appropriate reference.

Scheme 75

Scheme 76

Scheme 77

Scheme 78

Scheme 79

Scheme 80

1. Instrument Panel J/B Assy (Driver Side J/B Assy (Multiplex Network Body ECU)) WIRING COLOR SPECIFICATION Symbols (Terminal No.) Wiring Color Condition STD Voltage (V) IH-2 <=> Body ground (GND1 <=> Body ground) W-B <=> Body ground Always Below 1 V IK-16 <=> IH-2 (LSR <=> GND1,2) W <=> W-B Rear door lock switch is in unlock position Below 1 V IK-16 <=> IH-2 (LSR <=> GND1, 2) W <=> W-B Rear door lock switch is in lock position 10 - 14 V IL-16 <=> IH-2 (LSR <=> GND1, 2) W <=> W-B Rear door lock switch is in unlock position Below 1 V IL-16 <=> IH-2 (LSR <=> GND1, 2) W <=> W-B Rear door lock switch is in lock position 10 - 14 V IK-15 <=> IH-2 (LSR <=> GND1, 2) W <=> W-B Rear door lock switch is in unlock position Below 1 V IK-15 <=> IH-2 (LSR <=> GND1, 2) W <=> W-B Rear door lock switch is in lock position 10 - 14 V IC-2 <=> IH-2 (SIG <=> GND1, 2) L-Y <=> W-B Ignition switch is OFF Below 1 V IC-2 <=> IH-2 (SIG <=> GND1, 2) L-Y <=> W-B Ignition switch is ON 10 - 14 V IB-4 <=> IH-2 (BECU <=> GND1, 2) W-R <=> W-B Always 10 - 14 V IA-8 <=> IH-2 (ILE <=> GND1, 2) W-R <=> W-B Key cylinder illumination, room lamp is OFF Below 1 V IA-8 <=> IH-2 (ILE <=> GND1, 2) W-R <=> W-B Key cylinder illumination, room lamp is ON 10 - 14 V IA-16 <=> IH-2 (ILE <=> GND1, 2) R-G <=> W-B Key cylinder illumination, room lamp is OFF Below 1 V IA-16 <=> IH-2 (ILE <=> GND1, 2) R-G <=> W-B Key cylinder illumination, room lamp is ON 10 - 14 V IK-9 <=> IH-2 (ILE <=> GND1, 2) R-G <=> W-B Key cylinder illumination, room lamp is OFF Below 1 V IK-9 <=> IH-2 (ILE <=> GND1, 2) R-G <=> W-B Key cylinder illumination, room lamp is ON 10 - 14 V IH-2 <=> Body ground (GND2 <=> Body ground) W-B <=> Body ground Always Below 1 V IB-8 <=> IH-2 (HRLY <=> GND1, 2) R <=> W-B Always 10 - 14 V IC-1 <=> IH-2 (TRLY <=> GND1, 2) L-W <=> W-B Always 10 - 14 V IK-12 <=> IH-2 (TRLY <=> GND1, 2) G <=> W-B Always 10 - 14 V IK-14 <=> IH-2 (TRLY <=> GND1, 2) G-Y <=> W-B Always 10 - 14 V IK-10 <=> IH-2 (TRLY <=> GND1, 2) L-R <=> W-B Always 10 - 14 V IE-16 <=> IH-2 (TRLY <=> GND1, 2) L <=> W-B Always 10 - 14 V ID-5 <=> IH-2 (ACC <=> GND1, 2) W-G <=> W-B Ignition switch is OFF Below 1 V ID-5 <=> IH-2 (ACC <=> GND1, 2) W-G <=> W-B Ignition switch is ON 10 - 14 V IJ-14 <=> IH-2 (HAZ <=> GND1, 2) W <=> W-B Ignition switch is ON and hazard switch is ON Below 1 V IJ-14 <=> IH-2 (HAZ <=> GND1, 2) W <=> W-B Ignition switch is ON and hazard switch is OFF 10 - 14 V IJ-15 <=> IH-2 (HAZ <=> GND1, 2) W <=> W-B Ignition switch is ON and hazard switch is ON Below 1 V IJ-15 <=> IH-2 (HAZ <=> GND1, 2) W <=> W-B Ignition switch is ON and hazard switch is OFF 10 - 14 V IG-1 <=> IH-2 (SPD <=> GND1, 2) V-R <=> W-B Ignition switch is ON and wheel is turned slowly Below 1 V <=> 10 - 14 V B3-3 <=> IH-2 (LMRY <=> GND1, 2) L-Y <=> W-B Ignition switch is OFF 10 - 14 V B3-3 <=> IH-2 (LMRY <=> GND1, 2) L-Y <=> W-B Ignition switch is ON Below 1 V B3-7 <=> IH-2 (DRL <=> GND1, 2) LG-B <=> W-B Engine is OFF Below 1 V B3-7 <=> IH-2 (DRL <=> GND1, 2) LG-B <=> W-B Engine is ON 10 - 14 V B3-14 <=> IH-2 (L <=> GND1, 2) GR <=> W-B Engine is OFF Below 1 V B3-14 <=> IH-2 (L <=> GND1, 2) GR <=> W-B Engine is ON 10 - 14 V B3-25 <=> IH-2 (PCYL <=> GND1, 2) Y <=> W-B Front passenger courtesy lamp is OFF 10 - 14 V B3-25 <=> IH-2 (PCYL <=> GND1, 2) Y <=> W-B Front passenger courtesy lamp is ON Below 1 V B3-26 <=> IH-2 (DCYL <=> GND1, 2) Y <=> W-B Front LH courtesy lamp is OFF 10 - 14 V B3-26 <=> IH-2 (DCYL <=> GND1, 2) Y <=> W-B Front LH courtesy lamp is ON Below 1 V B3-28 <=> IH-2 (TAIL <=> GND1, 2) G <=> W-B Ignition switch is ON and combination switch is OFF 10 - 14 V B3-28 <=> IH-2 (TAIL <=> GND1, 2) G <=> W-B Ignition switch is ON and combination switch is TAIL Below 1 V B3-30 <=> IH-2 (LSWP <=> GND1, 2) L-R <=> W-B Front RH door lock switch is in unlock position Below 1 V B3-30 <=> IH-2 (LSWP <=> GND1, 2) L-R <=> W-B Front RH door lock switch is in lock position 10 - 14 V B4-2 <=> IH-2 (PKB <=> GND1, 2) G-R <=> W-B Parking brake is ON Below 1 V B4-2 <=> IH-2 (PKB <=> GND1, 2) G-R <=> W-B Parking brake is OFF 10 - 14 V B4-7 <=> IH-2 (BCTY <=> GND1, 2) R-L <=> W-B Back door is closed 10 - 14 V B4-7 <=> IH-2 (BCTY <=> GND1, 2) R-L <=> W-B Back LH door is open Below 1 V B4-11 <=> IH-2 (RLCY <=> GND1, 2) P-B <=> W-B Rear LH door is closed 10 - 14 V B4-11 <=> IH-2 (RLCY <=> GND1, 2) P-B <=> W-B Rear LH door is open Below 1 V B4-12 <=> IH-2 (RRCY <=> GND1, 2) P-L <=> W-B Rear RH door is closed 10 - 14 V B4-12 <=> IH-2 (RRCY <=> GND1, 2) P-L <=> W-B Rear RH door is open Below 1 V B4-17 <=> IH-2 (P <=> GND1, 2) G-B <=> W-B Ignition switch ON and PNP switch is P 10 - 14 V B4-17 <=> IH-2 (P <=> GND1, 2) G-B <=> W-B Ignition switch ON and PNP switch is except P Below 1 V B4-21 <=> IH-2 (LCYL <=> GND1, 2) W-G <=> W-B Rear LH courtesy lamp is OFF 10 - 14 V B4-21 <=> IH-2 (LCYL <=> GND1, 2) W-G <=> W-B Rear LH courtesy lamp is ON Below 1 V B4-22 <=> IH-2 (RCYL <=> GND1, 2) W-G <=> W-B Rear RH courtesy lamp is OFF 10 - 14 V B4-22 <=> IH-2 (RCYL <=> GND1, 2) W-G <=> W-B Rear RH courtesy lamp is ON Below 1 V B4-23 <=> IH-2 (DCTY <=> GND1, 2) R-Y <=> W-B Front LH door is closed 10 - 14 V B4-23 <=> IH-2 (DCTY <=> GND1, 2) R-Y <=> W-B Front LH door is open Below 1 V B4-24 <=> IH-2 (PCTY <=> GND1, 2) R-Y <=> W-B Front RH door is closed 10 - 14 V B4-24 <=> IH-2 (PCTY <=> GND1, 2) R-Y <=> W-B Front RH door is open Below 1 V B5-1 <=> IH-2 (HEAD <=> GND1, 2) R <=> W-B Ignition switch is ON and combination switch is OFF 10 - 14 V B5-1 <=> IH-2 (HEAD <=> GND1, 2) R <=> W-B Ignition switch is ON and combination switch is ON Below 1 V B5-3 <=> IH-2 (A <=> GND1, 2) G-O <=> W-B Ignition switch is ON and combination switch is AUTO 10 - 14 V B5-3 <=> IH-2 (A <=> GND1, 2) G-O <=> W-B Ignition switch is ON and combination switch is AUTO Below 1 V B5-4 <=> IH-2 (CLTS <=> GND1, 2) Y <=> W-B Ignition switch is ON Signal waveform B5-5 <=> IH-2 (ACAN <=> GND1, 2) G-R <=> W-B Ignition switch is ON, light control switch is OFF and automatic light control sensor is covered <=> not covered Below 3 V --> 10 - 14 V B5-6 <=> IH-2 (CLTB <=> GND1, 2) G-Y <=> W-B Ignition switch is OFF Below 1 V B5-6 <=> IH-2 (CLTB <=> GND1, 2) G-Y <=> W-B Ignition switch is ON 10 - 14 V B5-7 <=> IH-2 (HF <=> GND1, 2) R-Y <=> W-B Ignition switch is ON and combination switch is FLASH 10 - 14 V B5-7 <=> IH-2 (HF <=> GND1, 2) R-Y <=> W-B Ignition switch is ON and combination switch is FLASH Below 1 V B5-8 <=> IH-2 (TAIL <=> GND1, 2) G <=> W-B Ignition switch is ON and combination switch is TAIL 10 - 14 V B5-8 <=> IH-2 (TAIL <=> GND1, 2) G <=> W-B Ignition switch is ON and combination switch is TAIL Below 1 V B5-21 <=> IH-2 (CLTE <=> GND1, 2) Y-G <=> W-B Always Below 1 V B5-20 <=> IH-2 (HR <=> GND1, 2) W <=> W-B Ignition switch is ON and combination switch is OFF 10 - 14 V B5-20 <=> IH-2 (HR <=> GND1, 2) W <=> W-B Ignition switch is ON and combination switch is HEAD Below 1 V
2. Multiplex Network Body ECU No.2 WIRING COLOR SPECIFICATION Symbols (Terminal No.) Wiring Color Condition STD Voltage (V) SIG <=> Body ground (S27-3 <=> Body ground) B-R <=> Body ground Ignition switch OFF --> ON Below 1 V <=> 10 - 14 V BECU <=> Body ground (S27-4 <=> Body ground) W-R <=> Body ground Always 10 - 14 V RSPT <=> Body ground (S27-16 <=> Body ground) G-W <=> Body ground Any door is opened --> all doors are closed Below 1 V --> 10 - 14 V LSPT <=> Body ground (S27-17 <=> Body ground) R-W <=> Body ground Any door is opened --> all doors are closed Below 1 V --> 10 - 14 V CSPT <=> Body ground (S27-18 <=> Body ground) W <=> Body ground Ignition switch OFF --> ON 10 - 14 V --> Below 1 V ILEW <=> Body ground (S27-23 <=> Body ground) W-G <=> Body ground) Ignition switch ON, rheostat volume fully left side --> turned to right side Below 1 V --> pulse generation SG <=> Body ground (S27-24 <=> Body ground) W-B <=> Body ground Always Below 1 V GND <=> Body ground (S27-25 <=> Body ground) W-B <=> Body ground Always Below 1 V RBD1 <=> Body ground (S28-1 <=> Body ground) R-L <=> Body ground PNP switch P position and any door is opened Below 1 V MPX+ (S28-2) L Multiplex communication circuit - RBD2 <=> Body ground (S28-5 <=> Body ground) R-L <=> Body ground PNP switch P position and any door is opened Below 1 V MPX- (S28-6) B Multiplex communication circuit