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Home >> Toyota >> 2005 >> MR2 C65M >> Repair and Diagnosis >> Engine Performance >> System >> Engine - Diagnostics >> DTC P1645: Multiplex Communication Malfunction* >> Inspection Procedure

Inspection Procedure

HINT:

Read freeze frame data using a hand-held tester or OBD II scan tool. Freeze frame data record the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data, from the time the malfunction occurred.

  1. Check combination meter (See  INSPECTION  ). 
    • NG: Replace combination meter. 
    • OK: Go to next step. 
  2. Check harness and connectors between combination meter and ECM (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ).