Chrysler PT Cruiser Service & Repair Manual page 269

PT
ENGINE - 2.0/2.4L DOHC (Continued)
DIAGNOSIS AND TESTING
COOLING SYSTEM
CONDITION
TEMPERATURE GAUGE READS
LOW
Fig. 3 Cooling System Operation
POSSIBLE CAUSE
1. Diagnostic Trouble Code (DTC)
has been set indicating a stuck
open engine thermostat.
2. Engine Coolant Temperature
Sensor.
3. Faulty temperature gauge.
4. Coolant level low during cold
ambient temperature, accompanied
by poor heater performance.
ENGINE - 2.0/2.4L DOHC
CORRECTION
1. Replace thermostat, if necessary.
If a (DTC) has not been set, the
problem may be with the
temperature gauge.
2. Check connector at Engine
Coolant Temperature Sensor. Repair
as necessary.
3. Check gauge operation (Refer to
8 - ELECTRICAL/INSTRUMENT
CLUSTER - DIAGNOSIS AND
TESTING).
4. Check coolant level in the coolant
recovery/reserve container and the
radiator. Inspect the system for
leaks. Repair as necessary. Refer to
WARNINGS in this section before
removing pressure cap.
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