Inspection/Initial Inspection and Diagnostic Overview.?
NO -
Go to step 2.
2. Clear the hard error code.
3. Turn the ignition switch to LOCK (0), then start the engine.
4. Check for the hard error code.
Is DTC 1306 indicated?
YES -
Go to step 5.
NO -
Intermittent failure, the system is OK at this time.?
5. Go into the Self-Diagnosis mode, and use the Car Status test to check the vehicle speed pulse.
6. With the help of an assistant drive the vehicle and watch the VSP signal.
Does the VSP signal change from [0] to [1] as you drive?
YES -
Replace the audio-navigation unit See: Accessories and Optional Equipment/Radio, Stereo, and Compact Disc/Service and
Repair/Audio-Navigation Unit Removal/Installation.?
NO -
Go to step 7.
7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect audio-navigation connector A (24P) and PCM connector A (49P).
10. Check for continuity between audio-navigation unit connector A (24P) terminal No. 15 and body ground.
Is there continuity?
YES -
Repair a short to body ground in the wire between the audio-navigation unit and the PCM, and recheck.?
NO -
Go to step 11.
11. Check for continuity between audio-navigation unit connector A (24P) terminal No. 15 and PCM connector A (49P) terminal No. 30.
