CONFIRMATION STEP 2: AUDIO CONTROL SWITCH CONFIRMATION [ENTIRE AUDIO SYSTEM]

id0903e2802900

• Verify the customer complaint and identify the malfunction as occurring from either the audio control switch or the audio unit.

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Is the symptom related to either the audio control switch or the audio unit operation? | Yes | Verify the customer complaint and then go to the appropriate symptom troubleshooting procedure.
No | The symptom is related to the audio unit operation: • Follow “Confirmation Step 1”. The symptom is related to the audio control switch operation: • Go to the next step.
2 | • Disconnect the audio unit connector (24-pin). • Inspect both the audio unit and the wiring harness-side connectors for a poor connection. (such as damaged/pulled-out pins, corrosion) ― Terminal 1N (ST SW1) ― Terminal 1P (ST SW2) • Are all the pins normal? | Yes | Go to the next step.
No | If the audio unit side connector is malfunctioning: • Replace the audio unit. (See CENTER PANEL UNIT REMOVAL/INSTALLATION.) (See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.) If the wiring harness-side connector is malfunctioning: • Repair or replace the pins and/or the connector.
3 | • Inspect the continuity between audio unit wiring harness-side connector terminals 1N and 1P while operating the audio control switch. • Does the resistance change? | Yes | Verify the customer complaint and then go to the appropriate symptom troubleshooting procedure.
No | Go to the next step.
4 | • Turn the ignition switch to the LOCK position. • Remove the audio control switch. • Inspect the continuity between the audio unit wiring harness-side connector (24-pin) terminal and the audio control switch wiring harness-side connector (8-pin) terminal. ― Terminal 1N (24-pin) — Terminal G (8-pin) ― Terminal 1P (24-pin) — Terminal H (8-pin) • Is there continuity? | Yes | Replace the audio control switch. (See AUDIO CONTROL SWITCH REMOVAL/INSTALLATION.)
No | Repair or replace the related wiring harnesses.