Pinout Values and Diagnostic Parameters

AUDIO AND VISUAL SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK RADIO RECEIVER (w/ Navigation System)

(a) Disconnect the R1 receiver connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.

- If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Reconnect the R1 receiver connector.
(d) Measure the voltage according to the value(s) in the table below.

- If the result is not as specified, the receiver may have a malfunction.

2. CHECK RADIO RECEIVER (w/o Navigation System)

(a) Disconnect the R1 receiver connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.

HINT: *: w/ Rear Seat Entertainment System
- If the result is not as specified, the receiver may have a malfunction.

3. CHECK STEREO COMPONENT AMPLIFIER (w/ Navigation System)

(a) Disconnect the S39 and S42 amplifier connectors.
(b) Measure the resistance and voltage according to the value(s) in the table below.

- If the result is not as specified, there may be a malfunction on the wire harness.

(c) Reconnect the S39 and S42 amplifier connectors.
(d) Measure the voltage according to the value(s) in the table below.

HINT: *: w/ LEXUS Link System
If the result is not as specified, the amplifier may have a malfunction.

4. CHECK STEREO COMPONENT AMPLIFIER (w/o Navigation System)

(a) Disconnect the S39 and S42 amplifier connectors.
(b) Measure the resistance and voltage according to the value(s) in the table below.

HINT: *1: for 9 Speaker Models
*2: for 12 Speaker Models
*3: w/ LEXUS Link System
If the result is not as specified, the amplifier may have a malfunction.

5. CHECK TELEVISION DISPLAY Pinout Values and Diagnostic Parameters