Inspection Procedure

INSPECT FUSE (MPX-B1, AM1, MPX-IG, D DOOR, D/C CUT)
1. Remove the MPX-IG and AM1 fuses from the driver side J/B.
2. Remove the D DOOR and MPX-B1 fuses from the passenger side J/B.
3. Remove the D/C CUT fuse from the FL block.
4. Measure the resistance.
Standard: Below 1 Ω

NG: REPLACE FUSE

OK: Go to next step.
INSPECT RELAY (D-IG1)
1. Remove the D-IG1 relay from the driver side J/B.
2. Measure the resistance.
Standard:

Fig 1: Terminals Resistance Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Inspecting Relay (D-IG1)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RELAY

OK: Go to next step.
CHECK WIRE HARNESS (DRIVER DOOR ECU - BODY GROUND)
1. Disconnect the D25 ECU connector.
2. Measure the voltage and resistance of the wire harness side connector.
Standard:

Fig 3: Terminals Resistance And Voltage Reference Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Checking Wire Harness (Driver Door ECU - Body Ground)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )