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Multiplex Communication System - Diagnostics: Wiring Toyota Avalon XX20 рестайлинг

Communication Devices 3 illustrations ~347 words

WIRING DIAGRAM

See CIRCUIT INSPECTION .

Scheme 39

Scheme 39: INSPECTION PROCEDURE
  1. Check front passenger door ECU. CHECK: Check if the front passenger door window glass auto up. NOTE: With this inspection, the front passenger door ECU CPU can be diagnosed if it works normally or not. NG: Replace the front passenger door ECU. OK: Go to next step.
  2. Check wire harness. PREPARATION: Disconnect connector of passenger door ECU and body ECU. CHECK: Check continuity between terminals MPX4 of body ECU and MPX1 of passenger door ECU. OK: There is a continuity in wire harness. NOTE: If there is OPEN in wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace the passenger door ECU.

See MIRROR SWITCH CIRCUIT .

See CIRCUIT INSPECTION .

Scheme 40

Scheme 40: INSPECTION PROCEDURE
  1. Check theft deterrent ECU. CHECK: Check that the operation of the theft deterrent function is normal. NOTE: With this inspection, the theft deterrent ECU CPU can be diagnosed if it works normally or not. NG: Replace the theft deterrent ECU. OK: Go to next step.
  2. Check wire harness PREPARATION: Disconnect connector of body ECU and of theft deterrent ECU. CHECK: Check continuity between terminals MPX1 of theft deterrent ECU and MPX1 of body ECU. OK: There is a continuity in wire harness. NOTE: If there is OPEN in wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace the theft deterrent ECU.

See CIRCUIT INSPECTION .

Scheme 41

Scheme 41: INSPECTION PROCEDURE
  1. Check power seat ECU. CHECK: Check that the operation of front vertical and rear vertical is normal. NOTE: With this inspection, the power seat ECU CPU can be diagnosed if it works normally or not. NG: Replace the power seat ECU. OK: Go to next step.
  2. Check wire harness PREPARATION: Disconnect connector of power seat ECU and of body ECU. CHECK: Check continuity between terminals MPX2 of body ECU and MPX1 of power seat ECU. OK: There is a continuity in wire harness. NOTE: If there is OPEN in wire harness, please repair it. NG: Repair or replace wire harness. OK: Replace power seat ECU.