Taillight From Power Source System (See Page 72) ∗ ∗ ∗ ∗ : w/ Air Suspension System : w/o Air Suspension System : From Jul 2003 Production w/ LEXUS Link System (Mayday System) : Before Jul 2003 Production, From Jul 2003 Production w/o LEXUS Link System (Mayday System) 5A GAUGE NO 5A GAUGE NO 12 1G V 5B (∗3) V 1O 3M B(∗2) J/B ECU Light Failure Sensor GR 5D BR BB1 BB1 BB1 LG 2 LG 5D 13 5D 5B 5A L 12 5D 5D W–B 16 5C 15 5C 10 5A B 1P BR 1C W 1C 14 1D LG 1D GR A IS1 BR GR GR L L O B B G BR BR 23 B G 100A INP–J/B TAIL 17 D J41 Junction Connector TRLY B 4(D) Body ECU 7C C 8(A), C 9(B) Combination Meter Rear Light 7B 10A TAIL TAIL Relay B (∗2) W (∗1) 12 3M (∗3) 1A GR(∗4) W(∗1) B 1 Tail 3 W–B Tail GR GR 1 R9 Rear Combination Light RH 1 W–B R8 Rear Combination Light LH A A A W–B W–B W–B W–B A A A A A W–B W–B W–B W–B W–B W–B FL MAIN 0W W–B W W–B C10 Combination SW 12 R18 Rear Side Marker Light LH 7A T14 Taillight RH Head T13 Taillight LH L2 License Plate Light LH Tail L3 License Plate Light RH OFF F4 Front Side Marker RH H P3 Parking Light RH T P2 Parking Light LH Light Control SW EL 140A ALT R19 Rear Side Marker Light RH 18 F3 Front Side Marker LH Battery II A EF A EC A W–B J40 Junction Connector W–B A J42 Junction Connector A J3 Junction Connector A J4 Junction Connector W–B 3G A A A BS BR A J36 Junction Connector J35 Junction Connector W–B J37 Junction Connector 3D BO 94 95 LEXUS RX 330 (EWD563U) LEXUS RX 330 (EWD563U) Stop Light From Power Source System (See Page 72) ∗ : w/ Dynamic Laser Cruise Control ∗ : w/o Dynamic Laser Cruise Control 10A ECU–IG NO 10A STOP 1C J 7(B), J 8(A) Junction Connector A B P IA1 (∗1) C A 5C J9 Junction Connector A 19 5C 20 5C 10 5C L S13 Stop Light SW L LG (∗1) P (∗1) B 1M 19 1F B A P O (∗1) (∗2) (∗1) GR GR (∗1) GR 1P (∗1) GR A B A 1M J 7(B), J 8(A) Junction Connector 2 13 1C BB1 W W (∗1) (∗1) S7 Shift Lock ECU S15 Suspension Control ECU 19 STP E6 Engine Control Module 21 STP2 STP1 16 GR (∗2) G (∗1) W 27 G W–B STP W–B 12 W (∗2) W–B B STP W (∗2) A A STPO S1 Skid Control ECU with Actuator A GR GR (∗2) (∗2) W–B B (∗1) GR 11 4F B 10 4A (∗1) B 21 3H 20 4A L L IA1 H28 High Mounted Stop Light S32 Stop Light RH 12 3F W S31 Stop Light LH 3F B B (∗2) BRK Relay B B BO J35 Junction Connector A J36 Junction Connector BR 102 103 LEXUS RX 330 (EWD563U) LEXUS RX 330 (EWD563U) 65−2 LIGHTING − LIGHTING SYSTEM 650TN−01 ON−VEHICLE INSPECTION (a) Connector Front View: T10 INSPECT TURN SIGNAL FLASHER CIRCUIT Measure the voltage according to the value(s) in the table below E15683 Standard: Tester connection Condition Specified condition − body ground Turn ignition switch ON 10 to 14 V − body ground Turn ignition switch OFF Below V − body ground Always 10 to 14 V − body ground Always Below V (b) Connect the connector to turn on the signal flasher and turn the ignition switch to the ON position Inspect the wire harness side connector from the back according to the checks listed in the table below Standard: Tester connection Condition Specified condition − body ground Hazard switch OFF ® ON 0V ® 10 to 14 V (60 to 120 time per minutes) − body ground Turn signal switch (right turn) OFF ® ON 0V ® 10 to 14 V (60 to 120 time per minutes) − body ground Hazard switch OFF ® ON 0V ® 10 to 14 V (60 to 120 time per minutes) − body ground Turn signal switch (left turn) OFF ® ON 0V ® 10 to 14 V (60 to 120 time per minutes) − body ground Turn signal switch (left turn) OFF ® ON 10 to 14 V ® V − body ground Turn signal switch (right turn) OFF ® ON 10 to 14 V ® V − body ground Hazard switch OFF ® ON 10 to 14 V ® V 2004 LEXUS RX330 REPAIR MANUAL (RM1082U) 65−3 LIGHTING (a) Connector Front View: S31 (b) E69051 E68690 Connector Front View: (c) S31 (d) (e) E69342 (a) Connector Front View: S32 (b) − LIGHTING SYSTEM INSPECT REAR COMBINATION LAMP ASSY LH Connect the (+) lead from the voltmeter to terminal and the (−) lead from the voltmeter to the terminal Measure the voltage according to the value(s) in the table below Standard: Tester connection Condition 1−2 Brake pedal released Below V 1−2 Brake pedal depressed 10 to 14 V Disconnect the rear combination lamp assy LH connector Connect the (+) lead from the ohmmeter to the terminal and the (−) lead from the ohmmeter to the terminal Measure the resistance according to the value(s) in the chart below Standard: Tester connection Condition Specified condition 1−2 Always 314 to 347 W INSPECT REAR COMBINATION LAMP ASSY RH Connect the (+) lead from the voltmeter to terminal and the (−) lead from the voltmeter to the terminal Measure the voltage according to the value(s) in the table below Standard: Tester connection E69051 E68690 (c) Connector Front View: (d) S32 (e) E69342 2004 LEXUS RX330 REPAIR MANUAL (RM1082U) Specified condition Condition Specified condition 1−2 Brake pedal released Below V 1−2 Brake pedal depressed 10 to 14 V Disconnect the rear combination lamp assy RH connector Connect the (+) lead from the ohmmeter to the terminal and the (−) lead from the ohmmeter to the terminal Measure the resistance according to the value(s) in the chart below Standard: Tester connection Condition Specified condition 1−2 Always 314 to 347 W 05−556 DIAGNOSTICS DTC − ABS WITH EBD & BA & TRAC & VSC SYSTEM C1249/49 OPEN CIRCUIT IN STOP LIGHT SWITCH CIRCUIT CIRCUIT DESCRIPTION DTC No DTC Detecting Condition C1249/49 S When IG1 terminal voltage is 9.5 to 17.2 V, an open circuit of the stop lamp switch continues for 0.3 secs or more S When the brake pedal load sensing switch is on, the master cylinder pressure is Mpa or more and the deceleration calculated from the vehicle speed is 0.2 G or more, the stop lamp switch is off for secs or more 2004 LEXUS RX330 REPAIR MANUAL (RM1082U) Trouble Area S Stop lamp bulb S Stop lamp switch circuit 05CDD−01 05−557 DIAGNOSTICS − ABS WITH EBD & BA & TRAC & VSC SYSTEM WIRING DIAGRAM GR(*3) J8 J/C B Skid Control ECU with Actuator Engine Room R/B BRK Relay Istrument Panel J/B W(*3) IA1 GR(*4) B 27 S1 STP1 W(*3) B 13 1C 1M W (*4) Rear J/B BB1 L L 20 5C 10 5C 19 5C 5C 1P L S31 Stop Light LH L S32 Stop Light RH W−B G GR S13 Stop Lamp Switch W−B 2 H28 Hight Mounted Stop Light Instrument Panel J/B 1C B STOP 1A J35 J/C A A A W−B W(*1) B(*2) FL Block INP−J/B W 7A ALT 2 7C 7B W−B FL MAIN Battery *1: w/ Air Suspension System *2: w/o Air Suspension System *3: w/ Dynamic Laser Cruise Control *4: w/ Dynamic Laser Cruise Control J36 J/C A BR BO G26399 2004 LEXUS RX330 REPAIR MANUAL (RM1082U) 05−558 DIAGNOSTICS − ABS WITH EBD & BA & TRAC & VSC SYSTEM INSPECTION PROCEDURE (a) CHECK STOP LAMP SWITCH OPERATION(STOP LAMP SWITCH CIRCUIT) Check that the stop light comes on when the brake pedal is depressed and turns off when the brake pedal is released Standard: Stop lamp switch function is normal NG Go to step OK INSPECT SKID CONTROL ECU TERMINAL VOLTAGE(STP TERMINAL) (a) (b) Skid Control ECU (harness side connector) S1 STP1 G24767 Disconnect the skid control ECU connector S1 Measure the voltage according to the value(s) in the table below Standard: Tester Connection Switch condition Specified Condition S1−27 (STP1) − Body ground Brake pedal depressed to 14 V S1−27 (STP1) − Body ground Brake pedal released Below V NG Go to step OK CHECK REAR COMBINATION LAMP ASSY LH (See page 65−2) NG REPLACE REAR COMBINATION LAMP ASSY LH OK (a) (b) (c) RECONFIRM DTC Clear the DTCs Turn the ignition switch to the ON position Check if the same DTCs are recorded (See page 05−491) HINT: It is suspect that the DTCs output was caused by the poor connection of the connector terminal NO RECOVERLY TO NORMAL YES REPLACE ABS & TRACTION ACTUATOR ASSY (See page 32−39) 2004 LEXUS RX330 REPAIR MANUAL (RM1082U) 05−559 DIAGNOSTICS − ABS WITH EBD & BA & TRAC & VSC SYSTEM CHECK HARNESS AND CONNECTOR(STOP LAMP SWITCH − SKID CONTROL ECU) (a) Skid Control ECU (harness side connector) S1 (b) Disconnect the stop lamp switch connector S13 and skid control ECU connector S1 Measure the resistance according to the value(s) in the table below Standard: Tester Connection Specified Condition S1−27 (STP1) − S13−1 (STP) Below W STP1 Stop Lamp Switch (harness side connector) S13 STP NG G25017 C82562 G26188 REPAIR OR CONNECTOR REPLACE HARNESS OR OK REPLACE ABS & TRACTION ACTUATOR ASSY (See page 32−39) INSPECT STOP LAMP SWITCH ASSY Stop Lamp Switch Assy Û Free Pushed In (a) (b) Disconnect the stop lamp switch assy connector S31 Measure the resistance according to the value(s) in the table below Standard: Switch condition Tester connection Specified condition Switch pin free 1−2 Below W Switch pin pushed in 1−2 10 kW or higher NG REPLACE STOP LAMP SWITCH ASSY E65594 OK REPAIR OR REPLACE HARNESS OR CONNECTOR (STOP LAMP CIRCUIT) 2004 LEXUS RX330 REPAIR MANUAL (RM1082U)