Inspection Procedure

WARNING: This page is about a different car, the 2009 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT FUSES (RADIO NO. 2, ACC)

Remove the RADIO NO. 2 fuse from the engine room relay block.
Remove the ACC fuse from the main body ECU.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
RADIO NO. 2 fuse	Always	Below 1 Ω
ACC fuse	Always	Below 1 Ω

Install the fuses.

NG: REPLACE FUSES

Fig 1: Identifying Radio No. 2 Fuse And ACC Fuse

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step.

CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER - BATTERY AND BODY GROUND)

Disconnect the S23, S24 and S31 stereo component amplifier assembly connectors.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
S24-6 (GND) - Body ground	Always	Below 1 Ω
S24-7 (E) - Body ground	Always	Below 1 Ω

Measure the voltage according to the value(s) in the table below.

Standard Voltage

VOLTAGE SPECIFICATION

Tester Connection	Switch Condition	Specified Condition
S31-1 (+B) - S24-6 (GND)	Always	11 to 14 V
S31-5 (+B2) - S24-6 (GND)	Always
S23-12 (ACC) - S24-6 (GND)	Ignition switch ACC

Fig 2: Identifying S23, S24 And S31 Stereo Component Amplifier Assembly Connector Terminals

Reconnect the stereo component amplifier assembly connectors.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )