NO.2 SYSTEM DOES NOT CONTROL CAR-NAVIGATION SYSTEM BY STEERING SWITCH [CAR-NAVIGATION SYSTEM (INTEGRATED MULTI INFORMATION DISPLAY)]SM2446150
NO.2 SYSTEM DOES NOT CONTROL CAR-NAVIGATION SYSTEM BY STEERING SWITCH [CAR-NAVIGATION SYSTEM (INTEGRATED MULTI INFORMATION DISPLAY)]

id0903h3002400

2

System does not control car-navigation system by steering switch

POSSIBLE CAUSE
• Poor connection of multi information display connector, terminal damage
• Multi information display malfunction
• Steering switch malfunction
• Open or short circuit in wiring harness between steering switch and multi information display

Diagnostic procedure

STEP

INSPECTION

ACTION
1
• Inspect the connection of the multi information display connector (24-pin).
• Is the multi information display connector connected securely?
Yes
Go to the next step.
No
Securely connect the multi information display connector.
2
• Disconnect the multi information display connector (24-pin).
• Inspect both multi information display connector and wiring harness-side connector terminals 1N, 1Q and 1P for poor connection (such as damaged/pulled-out pins, corrosion).
• Are all the pins normal?
Yes
Go to the next step.
No
If the multi information display connector is wrong:
• Replace the multi information display. (See MULTI INFORMATION DISPLAY REMOVAL/INSTALLATION.)
If the wiring harness-side connector is wrong:
• Repair or replace the pins and/or the connector.
3
• Inspect the steering switch. (See STEERING SWITCH INSPECTION.)
• Is there any malfunction?
Yes
Replace the steering switch.
(See STEERING SWITCH REMOVAL/INSTALLATION.)
No
Go to the next step.
4
• Disconnect the multi information display connector (24-pin).
• Measure the resistance following at multi information display harness-side connector (24-pin) while the steering switch (ENTER, Up, Down, Right, Left, NAVI, BACK, INFO) is pressed.
― Terminal 1N—1Q
― Terminal 1P—1Q
• Is the resistance within the specified?
Specification (Resistance is changing according to switch pressed position.)
Terminal 1N—1Q (ENTER, Up, Down, Right, Left):
50 ohms—2.5 kilo-ohms
Terminal 1P—1Q (NAVI, BACK, INFO):
50 ohms—250 ohms
Yes
Replace the multi information display.
(See MULTI INFORMATION DISPLAY REMOVAL/INSTALLATION.)
No
Wiring harness between multi information display and steering switch for open or short circuit.