Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT FUSE (ACC, AM1, DOME)
1. Remove the ACC fuse and AM 1 fuse from the main body ECU.
2. Remove the DOME fuse from the engine room R/B.
3. Measure the resistance of the fuses.
  Standard resistance: Below 1 Ω
NG: REPLACE FUSE

OK: GO TO NEXT STEP

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - BATTERY AND BODY GROUND)

Disconnect the D10 receiver connector.

Measure the voltage.

Standard voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
D10-4 (B) - Body ground	Always	11 to 14 V
D10-3 (ACC)-Body ground	Ignition switch ACC	11 to 14 V

Measure the resistance.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
D10-7 (GND) - Body ground	Below 1 Ω

Fig 1: Identifying Radio Receiver Connectors

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE