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NO.8 DISPLAY SCREEN DOES NOT CHANGE TO THE NIGHT MODE. (FRONT AND REAR COMBINATION LIGHTS OPERATE NORMALLY.)

id0903e8802400

8 | Display screen does not change to the night mode. (Front and rear combination lights operate normally.)
POSSIBLE CAUSE | • Improper setting of NAVI map indication • Open or short circuit in TNS signal wiring harness (TNS signal related) • LCD unit malfunction • Poor connection of the LCD unit connector, terminal damage • car-navigation unit malfunction Note • The car-navigation control switch is inoperatiove if the following circuit is malfunctioning: - LCD unit connector (24-pin) I (SI01) -car-navigation unit (24-pin) N (SI01) - LCD unit connector (24-pin) K (SI02) -car-navigation unit (24-pin) P (SI02) • When the ignition switch is turned OFF, then ACC position, display screen changes to black.

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Turn the ignition switch to the ON position. • Does the display screen change to the night mode when the light switch is turned to the TNS position, and t the dimmer cancel switch is turned to OFF? | Yes | The system is normal.
No | Go to the next step.
2 | • Press the "MENU" button. • Select "Navigation Setup". • Select "User settings". • Input "MAP Mode". • Is the "Map Mode" set to "Auto"?. | Yes | Go to the next step.
No | The system is normal. Set the "Map Mode" to "Auto".
3 | • Diagnostic function is started. • Turn the light switch to TNS position. • Inspect the "TNS" on the diagnosis check screen. • Does the "TNS" indicate "ON"? | Yes | Replace the car-navigation unit. (See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.)
No | Go to the next step.
4 | • Turn the ignition switch to the LOCK position. • Remove the LCD unit. (See LCD UNIT REMOVAL/INSTALLATION.) • Inspect the connection of the LCD unit connector (24-pin). • Is the connector securely connected? | Yes | Go to the next step.
No | Securely connect the LCD connector.
5 | • Disconnect the LCD unit connector (24-pin). • Inspect both the LCD unit and wiring harness-side connector terminal V 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 the 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 | • Inspect the voltage of the LCD unit wiring harness-side connector (24-pin) terminal V (TNS signal) • Is voltage B+ when the light switch is turned to the TNS position? | Yes | Replace the LCD unit (See LCD UNIT REMOVAL/INSTALLATION.), then go to the next step.
No | Inspect for TNS signal circuit. Repair or replace if necessary.
8 | • Does the system operate properlyr? | Yes | Troubleshooting is completed
No | Replace the car-navigation unit. (See CAR-NAVIGATION UNIT REMOVAL/INSTALLATION.)