Test No. 2, Front Passenger's Door Ecu Communication Circuit
Disconnect 22-pin connector "B" from body ECU. See Figure. Disconnect 18-pin connector "B" from front passenger's door ECU. See Fig 1. Check for continuity in Yellow/Red wire between body ECU connec tor "B" terminal No. 16 and front passenger's door ECU connector "B" terminal No. 1. If continuity exists, replace front passenger's door ECU. If continuity does not exist, repair or replace wiring harness or connectors between body ECU and front passenger's door ECU.