Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Lexus >> 2003 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1645: Gateway Ecu Malfunction >> Circuit Description

Circuit Description

The ECM receives the operating condition signal (ON/OFF) of the A/C from the A/C ECU, and it also receives the electrical load information from the gateway ECU. The ECM uses this information to control the engine. DTC will set if no communication from body ECU and A/C ECU is detected by ECM for 10 seconds or more. Possible causes are:

scientia non olet · About Mike's Workshop Manuals