1. Disconnect the negative battery cable.
2. Remove the A/C amplifier.
3. Disconnect the A/C amplifier connector (24-pin).
4. Using a jumper wire or a similar device, short circuit A/C amplifier connector (24-pin) terminals 1P and 1R.
5. Connect the negative battery cable.
6. Turn the ignition switch to the ON position (engine off).
1. After performing the on-board diagnostic test procedure, inspect according to the following table:
|
INSPECTION
|
DISPLAY
|
ACTION
|
|
|---|---|---|---|
|
Inspect the climate control switch indicator lights.
|
|
All indicator lights illuminate.
|
Output signal from the audio unit is normal.
|
|
Except above
|
Replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION.)
|
||
2. Disconnect the jumper wire or the similar device connected to the A/C amplifier connector (24-pin) to exit the on-board diagnostic test function.
1. After performing the on-board diagnostic test procedure, turn on the audio.
2. Inspect according to the following table:
|
STEP
|
INSPECTION
|
ACTION
|
|
|---|---|---|---|
|
1
|
Press each mode switch of the climate control unit.
|
The buzzer sounds.
|
The switch is normal.
|
|
The buzzer does not sound.
|
Go to the next step.
|
||
|
2
|
Inspect the audio buttons by referring to the diagnostic assist function in the on-board diagnostic system [audio].
|
The buzzer sounds.
|
Replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION.)
|
|
The buzzer does not sound.
|
Replace the base unit.
|
||
3. Disconnect the jumper wire or the similar device connected to the A/C amplifier connector (24-pin) to exit the on-board diagnostic test function.
1. After performing the on-board diagnostic test procedure, turn on the audio.
2. Press the audio POWER and SCAN (upper) buttons simultaneously.
3. "A/C TEMP--" is displayed on the information display.
4. Inspect according to the following table:
|
INSPECTION
|
DISPLAY
|
ACTION
|
|
|---|---|---|---|
|
Turn the temperature control dial.
|
|
Does the numeral on the information display change from 0 to 16?
|
The temperature control dial is normal.
|
|
Except above
|
Replace the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION.)
|
||
5. Disconnect the jumper wire or the similar device connected to the A/C amplifier connector (24-pin) to exit the on-board diagnostic test function.
