Inspection Procedure

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

INSPECT FUSES (AMP, ACC)

Remove the AMP fuse from the engine room junction block.
Remove the ACC fuse from the main body ECU.

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
AMP fuse	Always	Below 1 Ω
ACC fuse	Always	Below 1 Ω

Install the fuses.

NG: REPLACE FUSES

Fig 1: Identifying Fuses (AMP, ACC)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

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

Disconnect the I17 and I16 stereo component amplifier assembly connectors.

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

Standard Resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
I16-2 (GND) - Body ground	Always	Below 1 Ω
I16-6 (GND2) - Body ground	Always	Below 1 Ω

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

Standard Voltage

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Switch Condition	Specified Condition
I16-1 (+B) - I16-2 (GND)	Always	11 to 14V
I16-3 (+B2) - I16-2 (GND)	Always
I17-12 (ACC) - I16-2 (GND)	Ignition switch ACC

Reconnect the stereo component amplifier assembly connectors.

Fig 2: Identifying Stereo Component Amplifier Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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