NO.2 IN NAVIGATION MODE, VEHICLE LOCATOR MARK SKIPS.


BHE090366000W03

2

In navigation mode, vehicle locator mark skips.

TROUBLESHOOTING HINTS

• Malfunction in vehicle speed signal line of car-navigation unit.
– Car-navigation unit malfunction
– ABS HU/CM malfunction (with ABS)
– DSC HU/CM malfunction (with DSC)
– Malfunction in wiring harness between car-navigation unit and instrument cluster

Diagnostic procedure

STEP

INSPECTION

ACTION

1
• Disconnect car-navigation unit connector (16-pin).
• Jack up vehicle and run engine at low speed.
• Measure voltage at the following terminal of car-navigation unit connector (16-pin):
– Terminal 1H (Vehicle speed signal)
• Is voltage approx. 2.5 V (reference)?
Note
• Vehicle speed signal is in electrical pulses of approx. 0 V to 5 V.
Yes
Replace car-navigation unit (available at Clarion service center) or get it repaired at Panasonic service center, then go to Step 4.
No
Go to next step.
2*
• Disconnect ABS HU/CM connector (28-pin) or DSC HU/CM connector (34-pin).
• Is there continuity between car-navigation unit connector (16-pin) terminal 1H and ABS HU/CM connector (28-pin) terminal V, or car-navigation unit connector (16-pin) terminal 1H and DSC HU/CM connector (34-pin) terminal AA?
Yes
Go to next step.
No
Repair wiring harness between car-navigation unit and ABS HU/CM, or car-navigation unit and DSC HU/CM, then go to Step 4.
3
• Inspect wiring harness between car-navigation unit connector (16-pin) terminal 1H and ABS HU/CM connector (28-pin) terminal V, or car-navigation unit connector (16-pin) terminal 1H and DSC HU/CM connector (34-pin) terminal AA for short to ground.
• Is there short to ground?
Yes
Repair wiring harness between car-navigation unit and ABS HU/CM, or car-navigation unit and DSC HU/CM, then go to next step.
No
Replace instrument cluster, then go to next step.
4
• Does vehicle locator mark operate normally?
Yes
Complete troubleshooting, then explain repairs to customer.
No
Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.