Schematic Reference: Radio/Audio System Schematics

DEFINITION: The rear seat audio (RSA) does not provide audio controls when using the headphones. The RSA power button indicator does not illuminate.

Did you perform the Radio/Audio System Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Entertainment System

1. Turn ON the ignition, with the engine OFF.
2. Turn ON the radio.
3. Install the headphones.
4. Press the power button on the RSA control.
5. Operate all of the RSA control buttons.

Do all the RSA controls operate properly?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Turn OFF the ignition.
2. Remove the RSA control. Refer to Second Seat Audio Control Replacement .
3. Turn ON the ignition, with the engine OFF.
4. Turn ON the radio.
5. Measure the voltage from the remote radio control supply voltage circuit of the RSA control to ground.

Does the voltage measure near the specified value?

9.5 V

Go to Step 4

Go to Step 5

Test the ground circuit of the RSA control for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 13

Go to Step 6

Test the remote radio control supply voltage circuit for an open or for a short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 13

Go to Step 7

1. Turn ON the ignition, with the engine OFF.
2. Turn ON the radio.
3. Measure the voltage from the remote radio control signal circuit of the RSA control to ground.
4. Press the following RSA control buttons and record the voltage values:

•

Seek Up

•

Seek Down

•

AM/FM

•

Tape/CD

•

PSET

•

PWR

Do the recorded voltages measure near the specified values?

2.5 V

2.0 V

4.0 V

3.5 V

3.0 V

4.5 V

Go to Step 8

Go to Step 9

Inspect for a poor connections at the harness connector of the radio. Refer to Testing for Intermittent Conditions and Poor Connections and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 13

Go to Step 10

1. Turn OFF the ignition.
2. Remove the radio. Refer to Radio Replacement .
3. Turn ON the ignition, with the engine OFF.
4. Turn ON the radio.
5. Measure the voltage from the remote radio control signal circuit of the radio to ground.
6. Press the following RSA control buttons and record the voltage values:

•

Seek Up

•

Seek Down

•

AM/FM

•

Tape/CD

•

PSET

•

PWR

Do the recorded voltages measure near the specified values?

2.5 V

2.0 V

4.0 V

3.5 V

3.0 V

4.5 V

Go to Step 7

Go to Step 11

Inspect for poor connections at the harness connector of the RSA control. Refer to Testing for Intermittent Conditions and Poor Connections and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 13

Go to Step 12

Important: Perform the radio setup procedure for the radio.

Replace the radio. Refer to Radio Replacement .

Did you complete the replacement?

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Go to Step 13

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Test the remote radio control signal circuit for an open or for a short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you correct the condition?

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Go to Step 13

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Replace the RSA control. Refer to Second Seat Audio Control Replacement .

Did you complete the replacement?

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Go to Step 13

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Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2