Interface Dial and/or Joystick Do Not Work
Interface dial and/or joystick do not workNOTE:
- Confirm the correct DVD color and version disc is installed in the navigation unit.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, get the navigation system anti-theft code.
- After troubleshooting, enter the navigation system anti-theft code.
1. Start the vehicle.
2. Go into the Diagnostic mode, and use "Hard Key" test under Unit Check.
Do the buttons work properly?
YES - The system is OK at this time.
NO - Go to step 3.
3. Measure the voltage between the interface dial 5P connector No. 4 terminal and body ground.
Is there battery voltage?
YES - Go to step 4.
NO - Repair open in the wire between the under-dash fuse/relay box and the interface dial.
4. Measure the voltage between interface dial 5P connector No. 3 terminal and body ground.
Is there 0.2 V or less?
YES - Go to step 5.
NO - Repair an open in the wire between the interface dial and body ground (G502).
5. Turn the ignition switch to LOCK (0).
6. Disconnect the interface dial 5P connector.
7. Disconnect the navigation unit connector A (20P).
8. Check for continuity between navigation unit connector A (20P) No. 17 terminal and interface dial 5P connector No. 1 terminal.
Is there continuity?
YES - Go to step 9.
NO - There is an open in the circuit between the interface dial and the navigation unit. Replace the affected shielded harness.
9. Check for continuity between navigation unit connector A (20P) No. 17 and No. 19 terminals.
Is there continuity?
YES - There is a short in the wire. Replace the affected shielded harness.
NO - Go to step 10.
10. Substitute a known-good interface dial, and recheck.
Is the system OK?
YES - Replace the original interface dial.
NO - Replace the navigation unit.