Gateway System: Wiring Lexus LS III

WIRING DIAGRAM

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 73

1. Check driver door ECU. CHECK: Check if the driver door window glass move up automatically. HINT: With this inspection, whether or not the driver door ECU functions normally can be diagnosed. NG: Replace driver door ECU. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS CHART Wire harness side connector of ECU Terminal Driver door ECU - Transponder key ECU MPX1 (D25-17) - MPX1 (T9-4) Driver door ECU - Rear door LH ECU MPX2 (D25-26) - MPX1 (R16-18) CHECK: Check continuity of the wire harness between the connectors. (Scheme 73): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace driver door ECU.

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 74

1. Check passenger door ECU. CHECK: Check if the passenger door window glass automatically moves up. HINT: With this inspection, whether or nor the passenger door ECU CPU functions normally can be diagnosed. NG: Replace passenger door ECU. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Passenger door ECU - Rear door RH ECU MPX1 (F17-17) - MPX2 (R15-20) Passenger door ECU - Gateway ECU MPX2 (F17-26) - MPD2 (G1-15) CHECK: Check continuity of the wire harness between the connectors. (Scheme 74): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace passenger door ECU.

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 75

1. Check tilt and telescopic ECU. CHECK: Check the operation of the manual tilt and telescopic. HINT: With this inspection, whether or not the tile and telescopic ECU CPU functions normally can be diagnosed. NG: Replace tilt and telescopic ECU. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Tilt and telescopic ECU - Driver side J/B ECU MPX1 (P8-3) - MPX2 (D3-7) Tilt and telescopic ECU - Combination switch MPX2 (P8-8) - MPX1 (C14-9) CHECK: Check continuity of the wire harness between the connectors. (Scheme 75): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace tilt and telescopic ECU.

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 76

1. Check rear door RH ECU. CHECK: Check if the rear door right window glass automatically moves up. HINT: With this inspection, whether or not the rear door RH ECU functions normally can be diagnosed. NG: Replace rear door RH ECU. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Rear door RH ECU - passenger door ECU MPX1 (R14-18) - MPX2 (F17-26) Rear door RH ECU - Rear door LH ECU MPX2 (R14-20) - MPX1 (R16-18) CHECK: Check continuity of the wire harness between the connectors. (Scheme 76): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace rear door RH ECU.

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 77

1. Check rear door LH ECU. CHECK: Check if the rear door left window glass automatically moves up. HINT: With this inspection, whether or not the rear door LH ECU functions normally can be diagnosed. NG: Replace rear door LH ECU. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Rear door LH ECU - Driver door ECU MPX1 (R13-18) - MPX2 (D15-26) Rear door LH ECU - Rear door RH ECU MPX2 (R13-20) - MPX1 (R15-18) CHECK: Check continuity of the wire harness between the connectors. (Scheme 77): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace rear door LH ECU.

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 78

1. Check rear seat switch. CHECK: Check that the rear power seat system operates normally. HINT: With this inspection, whether or not the rear seat switch CPU functions normally can be diagnosed. NG: Replace rear seat switch. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Rear seat switch - Transponder key ECU MPX1 (R27-6) - MPX1 (T9-4) CHECK: Check continuity of the wire harness between the connectors. (Scheme 78): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace rear seat switch.

See DTC B1266: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1267: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 79

1. Check ECM. CHECK: Check that the engine starts normally. HINT: With this inspection, whether or not the ECM functions normally can be diagnosed. NG: Replace ECM. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal ECM - Passenger side J/B ECU MPX1 (E2-21) - MPX- (P4-4) ECM - A/C ECU MPX2 (E2-20) - MPX+ (A11-2) CHECK: Check continuity of the wire harness between the connectors. (Scheme 79): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace ECM.

See DTC B1266: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1267: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 80

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal A/C ECU - ECM MPX+ (A11-2) - MPX2 (E2-20) A/C ECU - Integration control panel (w/o LEXUS navigation system) MPX- (A11-4) - MPX+ (C6-3) A/C ECU - Gateway ECU (w/ LEXUS navigation system) MPX- (A11-4) - MPI1 (G3-5) CHECK: Check continuity of the wire harness between the connectors. (Scheme 80): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace A/C ECU.

See DTC B1291: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1292: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 81

1. Check luggage room J/B ECU. CHECK: Check that the operation of luggage compartment door closer system is normal. HINT: With this inspection, whether or not the luggage room J/B ECU functions normally can be diagnosed. NG: Replace luggage room J/B ECU. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Luggage room J/B ECU - Combination switch MPX+ (L14-2) - MPX2 (C14-10) Luggage room J/B ECU - Gateway ECU MPX- (L14-13) - MPL1 (G3-6) CHECK: Check continuity of the wire harness between the connectors. (Scheme 81): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace luggage room J/B ECU.

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 82

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Theft deterrent ECU - Gateway ECU MPX2 (T5-33) - MPD1 (G3-4) Theft deterrent ECU - Transponder key ECU MPX1 (T5-13) - MPX2 (T9-5) CHECK: Check continuity of the wire harness between the connectors. (Scheme 82): ECU Connector Circuit Diagram OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace theft deterrent ECU.

See DTC B1266: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1267: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 83

1. Check combination meter ECU. CHECK: Start the engine and check that the speed meter and tachometer operate normally. HINT: With this inspection, whether or not the combination meter ECU CPU functions normally can be diagnosed. NG: Replace combination meter ECU. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Combination meter - Gateway ECU MPX+ (C12-2) - MPXI2 (G3-16) Combination meter - Skid control ECU MPX- (C12-3) - MPX1 (S12-8) CHECK: Check continuity of the wire harness between the connectors. (Scheme 83): ECU Connector Circuit Diagram OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace combination meter ECU.

See DTC B1266: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1267: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 84

1. Check driver seat ECU. CHECK: Check that the operation of front vertical and rear vertical is normal. HINT: With this inspection, whether or not the driver seat ECU CPU functions normally can be diagnosed. NG: Replace driver seat ECU. YES: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Driver seat ECU - Transponder key ECU MPX1 (D28-11) - MPX1 (T9-4) CHECK: Check continuity of the wire harness between the connectors. (Scheme 84): ECU Connector Circuit Diagram OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace driver seat ECU.

See DTC B1266: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1267: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 85

1. Check moon roof control ECU. CHECK: Check that the operation of the moon roof is normal. HINT: With this inspection, whether or not the moon roof control ECU CPU functions normally can be diagnosed. NG: Replace moon roof control ECU. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Moon roof control ECU - Overhead J/B MPX1 (M6-2) - MPX2 (O6-14) CHECK: Check continuity of the wire harness between the connectors on the wire harness. (Scheme 85): ECU Connector Circuit Diagram OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace moon roof control ECU.

See DTC B1266: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1267: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 86

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS Wire harness side connector of ECU Terminal Accessory bus buffer - Gateway ECU BUS-MPD2 CHECK: Check the continuity between the connectors on the wire harness. (Scheme 86): ECU Connector Circuit Diagram OK: Continuity NG: Repair or replace wire harness. OK: Replace the accessory bus buffer.

See DTC B1266: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1267: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 87

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Center cluster integration panel - A/C ECU MPX+ (C6-3) - MPX- (A11-4) Center cluster integration panel - Gateway ECU MPX- (C6-4) - MP11 (G3-5) CHECK: Check continuity of the wire harness between the connectors. (Scheme 87): ECU Connector Circuit Diagram Center Cluster Integration Panel - Gateway ECU OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace center cluster integration panel.

See DTC B1291: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1292: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 88

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Combination switch - Power tilt and power telescopic ECU MPX1 (C14-9) - MPX2 (P8-8) Combination switch - Luggage room J/B ECU MPX2 (C14-10) - MPX+ (L14-2) CHECK: Check continuity of the wire harness between the connectors. (Scheme 88): Combination Switch ECU And Gateway ECU Circuit Diagram OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace combination switch ECU.

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 89

1. Check rain sensor. CHECK: Check that the auto wiper system operates normally. HINT: With this inspection, whether or not the rain sensor CPU functions normally can be diagnosed. NG: Replace the rain sensor. YES: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Rain sensor - Overhead J/B MPX (R6-2) - MPX1 (O6-30) CHECK: Check continuity of the wire harness between the connectors. (Scheme 89): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace rain sensor.

See DTC B1266: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1267: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 90

1. Check airbag sensor assembly. CHECK: Check whether or not DTC is output after replacing the airbag sensor assembly. OK: DTC must not be output. OK: Replace airbag sensor assembly, Original airbag sensor assembly is faulty. See «AIR BAG SENSOR ASSEMBLY»(ref-150186-S32673566062002110500000). NG: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Airbag sensor assembly - Skid control ECU MPX1 (A24-24) - MPX2 (S12-19) Airbag sensor assembly - Passenger side J/B ECU MPX2 (A24-22) - AIRBAG (PH-2) CHECK: Check continuity of the wire harness between the connectors. (Scheme 90): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness or connector. OK: Replace airbag sensor assembly. See «AIR BAG SENSOR ASSEMBLY»(ref-150186-S32673566062002110500000).

See DTC B1266: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1267: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 91

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Skid control ECU - Combination meter MPX1 (S12-8) - MPX- (C12-3) Skid control ECU - Airbag sensor assembly MPX2 (S12-19) - MPX1 (A24-24) CHECK: Check continuity of the wire harness between the connectors. (Scheme 91): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace skid control ECU.

See DTC B1291: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1292: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 92

1. Check driver side J/B ECU. CHECK: Check whether or not meter illustration adjustment can be performed with the rheostat volume. NG: Replace driver side J/B ECU. OK: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Driver side J/B ECU - Front light ECU MPX1 (D3-15) - MPX2 (31) Driver side J/B ECU - Power tilt and power telescopic ECU MPX2 (D5-7) - MPX1 (P8-3) CHECK: Check continuity of the wire harness between the connectors. (Scheme 92): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace driver side J/B ECU.

See DTC B1266: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1267: INSTRUMENT PANEL SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 93

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Passenger side J/B ECU - Airbag sensor assembly AIRBAG (PH-2) - MPX2 (A24-22) Passenger side J/B ECU - ECM MPX- (P4-4) - MPX1 (E2-21) CHECK: Check continuity of the wire harness between the connectors. (Scheme 93): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace passenger side J/B ECU.

See DTC B1291: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1292: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 94

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Steering pad switch - Driver side J/B ECU MPX (C13-3) - MPX3 (D5-6) CHECK: Check continuity of the wire harness between the connectors. (Scheme 94): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace steering pad switch.

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 95

1. Check Transponder key ECU. CHECK: Check whether or not the engine is activated. NG: Replace Transponder key ECU. YES: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Transponder key ECU - Driver door ECU MPX1 (T9-4)-MPX1 (D25-17) Transponder key ECU - Theft deterrent ECU MPX1 (T9-4) - MPX (T5-13) CHECK: Check continuity of the wire harness between the connectors. (Scheme 95): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace Transponder key ECU.

See DTC B1291: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1292: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 96

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Front light ECU - Gateway ECU MPX1 (32) - MPL2 (G3-17) Front light ECU - Driver side J/B ECU MPX2 (31) - MPX1 (D3-15) CHECK: Check continuity of the wire harness between the connectors. (Scheme 96): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace front light ECU.

See DTC B1291: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1292: LIGHT SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 97

1. Check clearance sonar ECU. CHECK: Check that the clearance sonar system operates normally, check whether or not the clearance sonar buzzer sounds. NG: Replace clearance sonar ECU. YES: Go to next step.
2. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Clearance sonar ECU - Luggage room J/B ECU M+ (C17-1) - MPX (L14-3) CHECK: Check continuity of the wire harness between the connectors. (Scheme 97): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace clearance sonar ECU.

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 98

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Rear RH seat ECU - Gateway ECU MPX (R26-7) - MPD2 (G3-15) CHECK: Check continuity of the wire harness between the connectors. (Scheme 98): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace rear RH seat ECU.

See DTC B1214: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT) & DTC B1215: DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (GND SHORT) .

Scheme 99

1. Check wire harness. PREPARATION: Pull out the ECU connectors mentioned below. WIRE HARNESS TERMINALS Wire harness side connector of ECU Terminal Rear LH seat ECU - Transponder key ECU MPX (R25-7) - MPX1 (T9-4) CHECK: Check continuity of the wire harness between the connectors. (Scheme 99): Checking Continuity Of Wire Harness Between Connectors OK: There is a continuity between the connectors. HINT: If there is OPEN in any wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace rear LH seat ECU.