NO.6 CAR-NAVIGATION CONTROL SWITCH IS INOPERATIVE.

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NO.6 CAR-NAVIGATION CONTROL SWITCH IS INOPERATIVE.

B3E090366000W07

6 | Car-navigation control switch is inoperative.
POSSIBLE CAUSE | • Car-navigation control switch malfunction • Open or short circuit in the wiring harness (remote control signal) • Poor connection of the car-navigation control switch connector, terminal damage • Poor connection of the LCD unit connector, terminal damage

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Are the switches only partly inoperative? | Yes | Replace the car-navigation control switch. (See CAR-NAVIGATION CONTROL SWITCH REMOVAL/INSTALLATION.)
No | Go to the next step.
2 | • Inspect the connection of the car-navigation control switch connector (6-pin). • Is the connector securely connected? | Yes | Go to the next step.
No | Securely connect the car-navigation control switch connector (6-pin).

3

• Turn the ignition switch to the LOCK position.
• Disconnect the car-navigation control switch connector (6-pin).
• Inspect both the car-navigation control switch 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 the car-navigation control switch side connector is wrong: Replace the car-navigation control switch. (See CAR-NAVIGATION CONTROL SWITCH 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 LOCK position. • Remove the LCD unit. (See LCD UNIT REMOVAL/INSTALLATION.) • Inspect the car-navigation unit connector (24-pin). • Is the connector securely connected? | Yes | Go to the next step.
No | Securely connect the LCD unit connector.
5 | • Disconnect the LCD unit connector (6-pin). • Inspect both the car-navigation control switch 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 the LCD unit side connector is wrong: Replace LCD unit. (See LCD UNIT REMOVAL/INSTALLATION.) If the wiring harness-side connector is wrong: Repair or replace the pins and/or the connector.
6 | • Turn the ignition switch to the ACC position. • Inspect the voltage between the car-navigation control switch harness-side connector (6-pin) terminal A (power) and B (GND). • Is the voltage B+? | Yes | Go to the next step.
No | Inspect the vehicle side wiring harness (power supply circuit).

7

• Turn the ignition switch to the LOCK position.
• Disconnect the LCD unit connector (6-pin).
• Disconnect the car-navigation control switch connector (6-pin).
• Inspect for continuity between car-navigation control switch connector terminal E and the LCD unit connector terminal E.
• Is there continuity?

Yes

Replace the car-navigation control switch. (See CAR-NAVIGATION CONTROL SWITCH REMOVAL/INSTALLATION.)

No | Repair or replace the wiring harness.