Last Modified: 11-29-2007 1.6 J
Service Category: Audio/Visual/Telematics Section: Audio/Video
Model Year: 2008 Model: Sequoia Doc ID: RM0000012CI02ZX
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: DESCRIPTION (2008 Sequoia)

Radio Receiver Power Source Circuit

DESCRIPTION

This circuit provides power to the radio receiver assembly.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

INSPECT FUSES (RAD NO. 1, ACC)

(a) Remove the RAD NO. 1 fuse from the engine room junction block.

(b) Remove the ACC fuse from the main body ECU.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

RAD NO. 1 fuse

Always

Below 1 Ω

ACC fuse

(d) Install the fuses.

OK

2.

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

(a) Disconnect the I1*1, I4*2 and I9*2 radio receiver assembly connectors.

HINT:

*1: for 8 Speakers

HINT:

*2: for 14 Speakers

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

Standard Resistance:

for 8 Speakers

Tester Connection

Condition

Specified Condition

I1-7 (GND) - Body ground

Always

Below 1 Ω

for 14 Speakers

Tester Connection

Condition

Specified Condition

I4-20 (GND) - Body ground

Always

Below 1 Ω

I9-14 (GND) - Body ground

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

Standard Voltage:

for 8 Speakers

Tester Connection

Switch Condition

Specified Condition

I1-4 (B) - Body ground

Always

11 to 14 V

I1-3 (ACC) - Body ground

Ignition switch ACC

for 14 Speakers

Tester Connection

Switch Condition

Specified Condition

I4-1 (B) - Body ground

Always

11 to 14 V

I9-5 (+B) - Body ground

I4-11 (ACC) - Body ground

Ignition switch ACC

I9-16 (ACC) - Body ground

(d) Reconnect the radio receiver assembly connectors.

OK