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SYMPTOM TROUBLESHOOTING [ENTIRE AUDIO SYSTEM] 09-03D–5 09-03D End Of Sie NO.2 NO POWER ON THE ENTIRE AUDIO SYSTEM[ENTIRE AUDIO SYSTEM] id0903e2803100 Diagnostic procedure 8 • Turn the ignition switch to the LOCK position. • Remove the audio unit. • Inspect the connection of the audio unit connector (24-pin) (for sound signal line). • Is the connector connected securely? Yes Go to the next step. No If poor connection of audio unit connector: • Securely connect the audio unit connector. If the audio unit side connector is wrong: • Replace the audio unit. If the wiring harness-side connector is wrong: • Repair or replace the pins and/or the connector. After treating either the above-mentioned, then go to the 9 • Is there any noise? Yes Go to the next step. No The system is normal. 10 • Inspect the ground condition of the antenna. • Is the ground condition normal? Yes Go to the next step. No Repair or replace the ground. Go to the next step. 11 • Is there any noise? Yes Without Bose: Replace the audio unit. (See 09-20-4 AUDIO UNIT REMOVAL/INSTALLATION.) With Bose: • If noise occurs from the speaker of a specific channel, or the volume is minimized and the noise occurs: (See 09-20-6 AUDIO AMPLIFIER REMOVAL/ INSTALLATION.) • If noise occurs from the speaker of two or more channels or the volume is minimized and the noise dose not (See 09-20-4 AUDIO UNIT REMOVAL/ INSTALLATION.) (See 09-20-5 AUDIO UNIT DISASSEMBLY/ ASSEMBLY.) No The system is normal. STEP INSPECTION ACTION 2 No power on the entire audio system/Possible DTC: 09:Er20 Troubleshooting hints • Poor connection of audio unit connector, terminal damage • Audio unit malfunction • Burnt fuse (B+) • Burnt fuse (ACC) • Open or short circuit in power supply (B+) wiring harness • Open or short circuit in power supply (ACC) wiring harness STEP INSPECTION ACTION 1 • Turn the ignition switch to the LOCK position. • Inspect the following fuses: — RADIO — ROOM • Are the fuse normal? Yes Go to the next step. No Replace with the appropriate standard fuse. • If the fuse is melted, inspect the wiring harness for short to ground. Repair or replace the wiring harness, then 2 • Remove the audio unit. • Inspect the connection of the audio unit connector (24-pin). • Disconnect the audio unit connector and inspect both the audio unit and wiring — Terminal R (ACC) — Terminal W (GND) • Are all the pins normal? Yes Go to the next step. No If poor connection of audio unit connector: • Securely connect the audio unit connector. If the audio unit side connector is wrong: • Replace the audio unit. If the wiring harness-side connector is wrong: • Repair or replace the pins and/or the connector. 1871-1U-06B(09-03D).fm 5 ページ 2006年3月15日 水曜日 午前11時45分 |