Chrysler PT Cruiser 2001 Service Manual Supplement page 2011

BRAKES (CAB)
Symptom:
SYSTEM OVERVOLTAGE
When Monitored and Set Condition:
SYSTEM OVERVOLTAGE
When Monitored: Ignition on. The CAB monitors the Fused Ignition Switched Output
circuit at all times for proper system voltage.
Set Condition: If the voltage is between 17 and 19 volts for greater than 420 milliseconds
(ms), the Diagnostic Trouble Code (DTC) is set.
INTERMITTENT DTC
BATTERY OVERCHARGED
FUSED IGNITION SWITCH OUTPUT CIRCUIT OVERVOLTAGE
TEST
1 Turn the ignition on.
With the DRBIII , erase DTC's.
Turn the ignition off.
Turn the ignition on.
Start the engine.
With the DRBIII , read DTC's.
Is the System Overvoltage DTC present?
Yes → Go To 2
→ Go To 4
No
2 Turn ignition off.
Inspect for battery charger connected to battery.
Is a battery charger connected to the battery?
Yes → Charge battery to proper level. Disconnect the battery charger.
→ Go To 3
No
3 Turn ignition off.
Disconnect the CAB connector.
Note: Check connector - Clean/repair as necessary.
Start the engine.
Raise engine RPM's above 1800.
Measure the voltage of the Fused Ignition Switch Output Circuit.
Is the voltage above 16.5 volts ?
Yes → Refer to appropriate service information for charging system
→ Test Complete.
No
POSSIBLE CAUSES
ACTION
Clear DTC's.
Perform ABS VERIFICATION TEST.
testing and repair.
Perform ABS VERIFICATION TEST.
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APPLICABILITY
All
All
All