Multiplex Communication System - Diagnosis: Wiring Lexus LX J100 рестайлинг

WIRING DIAGRAM

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

Scheme 41

Scheme 42

1. Check power window master switch (Driver door ECU). CHECK: Check if the driver door window glass move up automatically. HINT: With this inspection, whether or not the power window master switch (driver door ECU) CPU functions normally can be diagnosed. NG: Replace power window master switch (driver door ECU) (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ). OK: Go to Next Step
2. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors below. CHECK: Check continuity of the wire harness between the 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 power window master switch (driver door ECU) (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ).

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

Scheme 43

Scheme 44

1. Check tilt and telescopic ECU. CHECK: Check the operation of the manual tilt and telescopic. HINT: With this inspection, whether or not the tilt and telescopic ECU CPU functions normally can be diagnose? NG: Replace tilt and telescopic ECU (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ). OK: Go to Next Step
2. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors below. CHECK: Check continuity of the wire harness between the 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 «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ).

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

Scheme 45

Scheme 46

1. Check body ECU (Sub). CHECK: Check that the rear wiper system operates normally. HINT: With this inspection, whether or not the body ECU (Sub) CPU functions normally can be diagnosed. NG: Replace body ECU (Sub) (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ). OK: Go to Next Step
2. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors below. CHECK: Check continuity of the wire harness between the 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 body ECU (Sub) (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ).

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

Scheme 47

Scheme 48

1. Check wiper control ECU. CHECK: Check that the auto wiper system operates normally. HINT: With this inspection, whether or not the wiper control ECU CPU functions normally can be diagnosed. NG: Replace the wiper control ECU (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ). YES: Go to Next Step
2. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors below. CHECK: Check continuity of the wire harness between the 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 wiper control ECU (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ).

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

Scheme 49

Scheme 50

1. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors mentioned below. CHECK: Check continuity of the wire harness between the 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 theft deterrent ECU (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ).

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

Scheme 51

Scheme 52

1. Check power seat ECU. CHECK: Check that the operation of front vertical and that of rear vertical are normal. HINT: With this inspection, whether or not the power seat ECU CPU functions normally can be diagnosed. NG: Replace power seat ECU (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ). YES: Go to Next Step
2. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors below. CHECK: Check continuity of the wire harness between the 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 power seat ECU (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ).

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

Scheme 53

Scheme 54

1. Check sliding roof ECU. CHECK: Check that the operation of the sliding roof is normal. HINT: With this inspection, whether or not the sliding roof ECU CPU functions normally can be diagnosed. NG: Replace sliding roof ECU (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ). OK: Go to Next Step
2. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors below. CHECK: Check continuity of the wire harness between the connectors on the wire harness. 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 sliding roof ECU (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ).

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

Scheme 55

Scheme 56

1. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors below. CHECK: Check the continuity between the connectors on the wire harness. OK: Continuity NG: Repair or replace wire harness. OK: Replace the bus buffer ECU.

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

Scheme 57

Scheme 58

1. Check mirror control ECU. CHECK: Check that the mirror control system operates normally. HINT: With this inspection, whether or not the mirror control ECU CPU functions normally can be diagnosed. NG: Replace the mirror control ECU (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ). YES: Go to Next Step
2. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors below. CHECK: Check continuity of the wire harness between the 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 mirror control ECU (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ).

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

Scheme 59

Scheme 60

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 (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ). YES: Go to Next Step
2. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors below. CHECK: Check continuity of the wire harness between the 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 «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ).

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

Scheme 61

Scheme 62

1. Check airbag sensor assembly. CHECK: Check whether or not DTC is output after replacing the airbag sensor assembly. OK: DTC is not output. OK: Replace airbag sensor assembly (Original airbag sensor assembly is faulty.)(See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ). NG: Go to Next Step
2. Check wire harness. (See «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ) PREPARATION: Pull out the ECU connectors below. CHECK: Check continuity of the wire harness between the 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 «HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE»(ref-215704-S35264831822006011800000) ).