Non-Trouble Code Procedures

SPEAKER
1. Disconnect speaker harness connector.
2. Measure the resistance between speaker terminals (+) and
- The resistance should be 2 - 4 ohms.

3. Using jumper wires, momentarily connect a 9 V battery between speaker terminals (+) and (-).
- A momentary hum or pop should be heard.

ANTENNA
1. Using a jumper wire, clip an auxiliary ground between antenna and body.
- If reception improves, check antenna ground (at body surface).
- If reception does not improve, check main feeder cable for short circuit or open circuit.

AUDIO UNIT
All voltage inspections are made with:
- Ignition switch ON or ACC
- Audio unit ON
- Audio unit connected (If removed for inspection, supply a ground to the case using a jumper wire.)

Audio Unit Voltages:

AUDIO UNIT VOLTAGES

Subwoofer Amplifier Voltages:

SUBWOOFER AMPLIFIER VOLTAGES

Steering Wheel Audio Control Switch Resistance Check:

STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE CHECK