Chrysler 2005 Crossfire SRT6 Service Manual page 4145

24 - 16 HEATING & AIR CONDITIONING - ELECTRICAL DIAGNOSTICS
RIGHT HEATER CORE TEMPERATURE SENSOR CIRCUIT (CONTINUED)
When Monitored and Set Condition
• When Monitored: With the ignition on.
• Set Condition: The A/C Heater Control Module detects an abnormally high or low voltage on the Right Heater
Core Temperature Sensor Signal circuit.
RIGHT HEATER CORE TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
RIGHT HEATER CORE TEMPERATURE SENSOR OPEN
RIGHT HEATER CORE TEMPERATURE SENSOR SIGNAL CIRCUIT OPEN
RIGHT HEATER CORE TEMPERATURE SENSOR GROUND OPEN
RIGHT HEATER CORE TEMPERATURE SENSOR SIGNAL CIRCUIT SHORT TO GROUND
A/C HEATER CONTROL MODULE
For a complete HVAC Circuit Diagram, (Refer to 24 - HEATING & AIR CONDITIONING - SCHEMATICS AND DIA-
GRAMS).
Diagnostic Test
1.
READ RIGHT HEATER CORE TEMPERATURE SENSOR VOLTAGE WITH DRB III
Turn the ignition on.
With the DRB III , read the Right Heater Core Temperature Sensor
voltage.
Does the DRB III
VOLTS or greater?
Yes >> Go to 2
No >> Go to 6
2.
MEASURE THE VOLTAGE OF THE RIGHT HEATER CORE TEMPERATURE SENSOR SIGNAL CIRCUIT
Turn the ignition off.
Disconnect the Heater Core Temperature Sensor harness connector.
Note: Check connector - Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the Right Heater Core Temperature Sensor
Signal circuit at the Heater Core Temperature Sensor harness connec-
tor.
Is the voltage above 5.5 volts?
Yes >> Repair the Right Heater Core Temperature Sensor Signal
circuit for a short to voltage.
Perform BODY VERIFICATION TEST.
No >> Go to 3
POSSIBLE CAUSES
display Right HEATER CORE TEMP: 5.0
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