Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT RADIO RECEIVER ASSEMBLY

Disconnect the R1 radio receiver assembly connector.

Measure the resistance.

Standard

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
TX+ (R1-5) - TX (R1-15)	Always	60 to 80

NG: REPLACE RADIO RECEIVER ASSEMBLY

Fig 1: Identifying R1 Radio Receiver Assembly Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO COMPONENT AMPLIFIER)

Disconnect the R1 radio receiver assembly connector and S23 stereo component amplifier assembly connector.

Check the resistance.

Standard

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
TX+ (S23-8) - TX+ (R1-15)	Below 1
TX+ (S23-7) - TX- (R1-15)	Below 1
TX+ (R1-5) - Body ground	10 k or higher
TX+ (R1-5) - Body ground	10 k or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying S23 Stereo Component Amplifier Assembly Terminals

OK: Go to next step

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY
NG: REPLACE RADIO RECEIVER ASSEMBLY

OK: END