Diagnostic procedure
STEP INSPECTION ACTION
Yes
Replace car-navigation unit
(available at Clarion service
center) or get it repaired at
Panasonic service center, then go
to Step 4.
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 .
No Go to next step.
Yes 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?
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.
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.
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?
No
Replace instrument cluster, then
go to next step.
Yes
Complete troubleshooting, then
explain repairs to customer.
4
• Does vehicle locator mark operate normally?
No
Recheck malfunction symptoms,
then repeat from Step 1 if
malfunction recurs.
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