Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT RADIO RECEIVER ASSEMBLY

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

Standard voltage

STANDARD VOLTAGE SPECIFICATIONS

Tester Connection	Condition	Specified Condition
E76-7 (MCVD) - Body ground	Ignition switch ACC	4 to 6 V

NG: REPLACE RADIO RECEIVER ASSEMBLY

Fig 1: Identifying E76 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO to next step

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - BODY GROUND)

Disconnect the E76 radio receiver connector.
Measure the resistance according to the value(s) in the table below.

Standard resistance

STANDARD RESISTANCE SPECIFICATIONS

Tester Connection	Condition	Specified Condition
E76-3 (TSW-) - E76-6 (MGND)	Always	Below 1 Ω
E76-3 (TSW-) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying E76 Radio Receiver Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO to next step

CHECK HARNESS AND CONNECTOR (MICROPHONE - RADIO RECEIVER)

Disconnect the M1 microphone connector.
Measure the resistance according to the value(s) in the table below.

Standard resistance

STANDARD RESISTANCE SPECIFICATIONS

Tester Connection	Condition	Specified Condition
E76-7 (MCVD) - M1-3 (ACC)	Always	Below 1 Ω
E76-2 (MIC+) - M1-2 (MI1+)	Always	Below 1 Ω
E76-1 (MIC-) - M1-1 (MIC-)	Always	Below 1 Ω
M1-3 (ACC) - Body ground	Always	10 kΩ or higher
M1-2 (MIC+) - Body ground	Always	10 kΩ or higher
M1-1 (MIC-) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 3: Identifying M1 Microphone Connector Terminals

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