Toyota Highlander IV (2019-2024) brake master cylinder sub-assembly Wiring diagrams

ABS 1 FUSE ABS 2 FUSE ABS 3 FUSE ABS MTR 1 FUSE ABS- MAIN FUSE BLK WIRE BLU WIRE BRAKE BOOSTER PUMP ASSEMBLY W/ ACCUMULATOR BRAKE FLUID LEVEL WARNING SWITCH (BRAKE BOOSTER W/ ACCUMULATOR PUMP ASSEMBLY) BRAKE MASTER CYLINDER SUB-ASSEMBLY COMPUTER DATA LINES SYSTEM CTY ENGINE ROOM R/B 1 ASSEMBLY GRN WIRE GRY WIRE HOT AT ALL TIMES LBL LEFT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LEFT PARKING BRAKE ACTUATOR ASSEMBLY LT BLU WIRE MGND ORG/ WIRE PNK WIRE PPL/GRN WIRE RED WIRE RIGHT PARKING BRAKE ACTUATOR ASSEMBLY VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

ACL AIR BAG SENSOR ASSEMBLY BEHIND LEFT QUARTERPANEL) BLK WIRE BLU WIRE BRAKE ACTUATOR ASSEMBLY BRAKE MASTER CYLINDER SUB-ASSEMBLY CANN CANP CAYH CAYL ECU-ACC FUSE ECU-B 2 FUSE GRN WIRE GRY WIRE HA (RIGHT END OF DASH) HOT AT ALL TIMES HOT W/ HOT W/ ACC RELAY ENERGIZED INSTRUMENT PANEL J/B ASSEMBLY INTEGRATION CONTROL SUB-ASSEMBLY LT BLU WIRE LT GRN WIRE NETWORK GATEWAY ECU (RIGHT END OF DASH) OCCUPANT DETECTION ECU ORG/ WIRE PNK WIRE POWER STEERING ECU (RACK, PINION POWER STEERING GEAR ASSEMBLY) PPL/PNK WIRE PPL/VIO WIRE PPL/WHT WIRE RED WIRE RIGHT HEADLIGHT ECU SUB-ASSEMBLY RIGHT OUTER MIRROR CONTROL ECU ASSEMBLY STEERING SENSOR (UPPER STEERING COLUMN) VIO WIRE W/ 12.3 INCH DISPLAY W/ ADAPTIVE FRONT LIGHTING SYSTEM W/ MEMORY WHT WIRE WHT/BLK WIRE YAW RATE SENSOR

BLK WIRE BLU WIRE BRAKE MASTER CYLINDER SUB-ASSEMBLY BRN WIRE COMPUTER DATA LINES SYSTEM FORWARD RECOGNITION CAMERA GRN WIRE GRY WIRE HA (RIGHT END OF DASH) HOT AT ALL TIMES HOT W/ IGB INSTRUMENT PANEL J/B ASSEMBLY LKSW MILLIMETER WAVE RADAR SENSOR ASSEMBLY ORG/ WIRE PNK WIRE PPL RED WIRE RELAY ENERGIZED RIGHT STEERING PAD SWITCH SGND SPIRAL CABLE SUB-ASSEMBLY STEERING PAD SWITCH ASSEMBLY STOP FUSE VIO WIRE WHT WIRE WHT/BLK WIRE

BLK WIRE BLU WIRE BRAKE ACTUATOR ASSEMBLY BRAKE MASTER CYLINDER SUB-ASSEMBLY CERTIFICATION ECU COMPUTER DATA LINES SYSTEM CTLA CTLB CTLS CTRS DRL OFF ENGINE ROOM R/B 1 ASSEMBLY EXCEPT HYBRID GRN WIRE GRY WIRE HEAD HEADLIGHT DIMMER SWITCH ASSEMBLY HMSL HOT AT ALL TIMES L OFF LEFT OUTER REAR VIEW MIRROR ASSEMBLY LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE ORG/ WIRE PNK WIRE PPL/BLK WIRE PPL/BLU (OR RED) WIRE PPL/BLU WIRE PPL/LT BLU WIRE PPL/ORG WIRE RADIO SETTING CONDENSER RED WIRE RIGHT END OF DASH) RIGHT OUTER REAR VIEW MIRROR ASSEMBLY SPIRAL CABLE SUB-ASSEMBLY STEERING SENSOR TAIL AUTO HEAD TL TR TOWING-B FUSE TR TL TRNL PPL TRNR TTLA PPL TTLS TTRS TURN TURN SIGNAL SWITCH VIO WIRE W/ STOP/ START SYSTEM W/O MEMORY W/O STOP/ START SYSTEM WHT WIRE WHT/BLK WIRE YEL WIRE

BRAKE FLUID LEVEL WARNING SWITCH (BRAKE MASTER CYLINDER RESERVOIR SUB-ASSEMBLY) BRAKE MASTER CYLINDER SUB-ASSEMBLY BRAKE PEDAL LOAD SENSING SWITCH ASSEMBLY CF (EXCEPT HYBRID) (TOP FRONT OF ENGINE) COMPRESSOR W/ PULLEY ASSEMBLY ENGINE STOP, START ECU EXCEPT HYBRID HYBRID VEHICLE CONTROL ECU IGNITION COIL ASSEMBLY 1 IGNITION COIL ASSEMBLY 2 IGNITION COIL ASSEMBLY 3 IGNITION COIL ASSEMBLY 4 IGNITION COIL ASSEMBLY 5 IGNITION COIL ASSEMBLY 6 INVERTER W/ CONVERTER ASSEMBLY LEFT FRONT SPEED SENSOR SHIELD LEFT REAR AXLE HUB, BEARING ASSEMBLY SHIELD RIGHT FRONT SPEED SENSOR SHIELD RIGHT REAR AXLE HUB, BEARING ASSEMBLY SHIELD SHIELD STOP LIGHT SWITCH ASSEMBLY VACUUM WARNING SWITCH ASSEMBLY VEHICLE APPROACHING SPEAKER CONTROLLER W/ STOP/ START SYSTEM W/O STOP/ START SYSTEM WHT/BLK WIRE WINDSHIELD WIPER MOTOR ASSEMBLY WINDSHIELD WIPER RELAY ASSEMBLY

ABS 1 FUSE ABS 2 FUSE ABS 3 FUSE ABS MTR 1 FUSE ABS- MAIN FUSE BATT FAN 1 FUSE BATT FAN 1 RELAY BATT FAN 2 FUSE BATT FAN 2 RELAY BATT-S FUSE BATTERY BATTERY STATE SENSOR ASSEMBLY BLK WIRE BLK/DK GRN WIRE BLU WIRE BRAKE ACTUATOR ASSEMBLY BRAKE MASTER CYLINDER SUB-ASSEMBLY D/L 2 FUSE ECU-B 3 FUSE EFI 1 FUSE EFI- MAIN 3 FUSE EFI- MAIN RELAY 3 ENGINE ROOM J/B 1 ASSEMBLY GRN WIRE GRY WIRE HORN FUSE HORN RELAY IGCT RELAY IGCT-IG FUSE INV W/ PMP FUSE INV W/PMP RELAY INVERTER W/ CONVERTER ASSEMBLY J/B-B FUSE LT BLU WIRE LT GRN WIRE MAIN FUSE MG FUSE MULTI- DISPLAY ASSEMBLY PPL/VIO WIRE R/B 1 FUSE RADIO 2 FUSE RADIO RECEIVER ASSEMBLY RADIO, DISPLAY RECEIVER ASSEMBLY RED WIRE TO EDU FUSE (DIAGRAM 2 OF 12) TO INSTRUMENT PANEL J/B ASSEMBLY (DIAGRAM 6 OF 12) VIO WIRE VVT FUSE VVT RELAY W/ 12.3 INCH DISPLAY W/ 8 INCH DISPLAY W/ BUILT-IN AMPLIFIER W/ SEPARATE AMPLIFIER WHT WIRE

ACC RELAY AIR BAG SENSOR ASSEMBLY ALL DOOR LOCK RELAY BLK WIRE BLK/ WHT WIRE BLU WIRE BRAKE ACTUATOR ASSEMBLY BRAKE MASTER CYLINDER SUB-ASSEMBLY COMBINATION METER ASSEMBLY D DOOR UNLOCK RELAY D/L FUSE DCM (TELEMATICS TRANSCEIVER) DCM FUSE DOME CUT RELAY DOME FUSE ECU-B 1 FUSE ECU-B 2 FUSE FROM CERTIFICATION ECU (DIAGRAM 4 OF 12) FROM ENGINE ROOM R/B 1 ASSEMBLY (DIAGRAM 1 OF 12) FROM ENGINE ROOM R/B 1 ASSEMBLY (DIAGRAM 2 OF 12) GRY WIRE HAZ FUSE ID CODE BOX (IMMOBILIZER CODE ECU) L/D DOOR UNLOCK RELAY LT BLU WIRE LT GRN WIRE MULTIPLEX NETWORK DOOR ECU NETWORK GATEWAY ECU OCCUPANT DETECTION ECU PNK WIRE PPL/BLK WIRE PPL/WHT WIRE R/B 7 (RIGHT END OF DASH) RADIATOR SHUTTER SUB- ASSEMBLY REAR WIPER MOTOR ASSEMBLY RED WIRE ROOF CONSOLE BOX ASSEMBLY S-HORN FUSE S-HORN RELAY STEERING LOCK ACTUATOR/ UPPER BRACKET ASSEMBLY STOP FUSE STOP LIGHT SWITCH ASSEMBLY STRG LOCK FUSE SWING GRILLE ACTUATOR ASSEMBLY TO CERTIFICATION ECU (DIAGRAM 4 OF 12) TO DOOR R/L FUSE (DIAGRAM 7 OF 12) TO ECU-ACC FUSE (DIAGRAM 11 OF 12) TO ENGINE ROOM R/B ASSEMBLY 1 (DIAGRAM 5 OF 12) VIO WIRE WASHER FUSE WHT WIRE WINDSHIELD WIPER RELAY ASSEMBLY WIPER RR FUSE YEL WIRE

AWD ECU ASSEMBLY BKUP LP FUSE BKUP LP RELAY BLK WIRE BLU WIRE BRAKE MASTER CYLINDER SUB-ASSEMBLY COMPRESSOR W/ MOTOR ASSEMBLY DEF RELAY DEICER RELAY DIODE (PARK/ NEUTRAL POSITION SWITCH ASSEMBLY) ENGINE ROOM R/B 1 ASSEMBLY ENGINE STOP, START ECU FROM ACC RELAY (DIAGRAM 6 OF 12) FRONT WIPER DEICER SWITCH GRN WIRE GRY WIRE LEFT BLIND SPOT MONITOR SENSOR LEFT HEADLIGHT ECU SUB-ASSEMBLY LT BLU WIRE MILLIMETER WAVE RADAR SENSOR ASSEMBLY ORG/ WIRE PNK WIRE POWER STEERING ECU (RACK, PINION POWER STEERING GEAR ASSEMBLY) PPL/BLK WIRE PPL/BLU WIRE PPL/GRY WIRE PPL/ORG WIRE PPL/VIO WIRE PPL/WHT WIRE RED WIRE RIGHT BLIND SPOT MONITOR SENSOR RIGHT HEADLIGHT ECU SUB-ASSEMBLY S/HTR F/L RELAY S/HTR F/R RELAY SHIFT LOCK CONTROL UNIT ASSEMBLY STEERING HEATER SWITCH STEERING SENSOR VEHICLE APPROACHING SPEAKER CONTROLLER VIO WIRE W/ 12.3 INCH DISPLAY W/ ADAPTIVE FRONT LIGHTING SYSTEM WHT WIRE YAW RATE SENSOR YEL WIRE