NO.11 DISPLAY DOES NOT CHANGE TO THE REAR MOUNT CAMERA IMAGE [ENTIRE AUDIO SYSTEM]

id0903e2946600

11 | Display does not change to the rear mount camera image
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Possible DTC | —
POSSIBLE CAUSE | • Rear mount camera malfunction • Poor connection of the rear mount camera connector, terminal damage • Poor connection of the audio unit connector, terminal damage • Open or short circuit in wiring harness between audio unit and rear mount camera • Open or short circuit in reverse signal wiring harness • Audio unit malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | • Is the lens of the rear mount camera dirty or view is obstructed? | Yes | Clean the lens of the rear mount camera or remove the obstruction.
No | Go to the next step.
2 | • Does the lens of the rear mount camera have a crack and damage? | Yes | Replace the rear mount camera. (See REAR MOUNT CAMERA REMOVAL/INSTALLATION.)
No | Go to the next step.
3 | • Turn the ignition switch to the OFF position. • Remove the rear mount camera. • Inspect the connection of the rear mount camera connector (4-pin). • Disconnect the rear mount camera connector (4-pin). • Inspect both the rear mount camera and wiring harness-side connector for poor connection (such as damaged/pulled-out pins, corrosion). • Are all the pins normal? | Yes | Go to the next step.
No | If poor connection of rear mount camera connector: • Securely connect the rear mount camera connector. If the rear mount camera connector is wrong: • Replace the rear mount camera. (See REAR MOUNT CAMERA REMOVAL/INSTALLATION.) If the wiring harness-side connector is wrong: • Repair or replace the pins and/or the connector.
4 | • Turn the ignition switch to the OFF position. • Remove the audio unit. • Inspect the connection of the Audio unit connector (4-pin). • Disconnect the Audio unit connector (4-pin). • Inspect both the audio unit connector terminal for poor connection (such as damaged/pulled-out pins, corrosion). • 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 connector is wrong: • Replace the audio unit. If the wiring harness-side connector is wrong: • Repair or replace the pins and/or the connector.
5 | • Inspect the following wiring harnesses between the audio unit and rear mount camera. ― Terminal 3A (4-pin, POWER)—terminal A (5-pin, POWER) ― Terminal 3D (4-pin, GND)—terminal D (5-pin, V-GND) ― Terminal 3C (4-pin, COMPOSITE)—terminal C (5-pin, COMPOSITE) • Is there open or short circuit? | Yes | Go to Step 7.
No | Inspect the suspect wiring harness. Repair or replace if necessary.
6 | • Turn the ignition switch to the OFF position. • Remove the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.) • Disconnect the audio unit connector (24-pin). • Turn the ignition switch to the ON position. • Shift the selector lever in R range. • Inspect the voltage between the audio unit terminals 1M (24-pin, REV) and 1W (24-pin, GND). • Is the voltage B+? | Yes | Replace the rear mount camera, then inspect generating of malfunction symptom. (See REAR MOUNT CAMERA REMOVAL/INSTALLATION.) Even if it exchanges rear mount camera, when a fault phenomenon occurs: • Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.) • Reinspect the malfunction symptom, then repeat from Step 1 if malfunction recurs.
No | Inspect the suspect wiring harness (reverse signal). Repair or replace if necessary.