Chrysler Sebring, Stratus sedan, Sebring Convertible. Manual — part 69
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the A/C - Heater Control C1 harness connector.
Disconnect the Body Control Module C2 harness connector.
Measure the resistance between ground and the Temperature Select Signal circuit.
Is the resistance below 10K ohms?
All
Yes
→ Repair the Temperature Select Signal circuit for a short to
ground.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
4
Turn the ignition off.
Disconnect the A/C - Heater Control C1 harness connector.
Disconnect the Body Control Module C2 harness connector.
Measure the resistance between the Sensor Ground circuit and the Temperature
Select Signal circuit at the A/C - Heater Control C1 harness connector.
Is the resistance below 10K ohms?
All
Yes
→ Repair the Temperature Select Signal circuit for a short to the
Sensor Ground circuit.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the A/C - Heater Control C1 harness connector.
Disconnect the Body Control Module C2 harness connector.
Measure the resistance of the Temperature Select Signal circuit between the A/C -
Heater Control C1 harness connector and the BCM C2 harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 6
No
→ Repair the Temperature Select Signal circuit for an open.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
261
HEATING & A/C
A/C BLEND DR INPUT OPEN/SHORT TO GROUND - MTC —
Continued
TEST
ACTION
APPLICABILITY
6
Turn the ignition off.
Reconnect the A/C - Heater Control C1 harness connector.
Disconnect the Body Control Module C2 harness connector.
Put the Blend Control switch in the full cold position.
Turn the ignition on.
Measure the voltage of the Temperature Select Signal circuit.
Move the Blend Control switch from full cold to full hot while observing the
voltmeter.
Does the voltage change fluidly from approximately 9.0 volts (full cold) to 11.89 volts
(full hot)?
All
Yes
→ Replace and program the Body Control Module in accordance
with the Service Information.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the A/C - Heater Control in accordance with the Service
Information.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
262
HEATING & A/C
A/C BLEND DR INPUT OPEN/SHORT TO GROUND - MTC —
Continued
Symptom:
A/C HEAD, A/C SWITCH FAILURE - MTC
When Monitored and Set Condition:
A/C HEAD, A/C SWITCH FAILURE - MTC
When Monitored:
With the engine running and the Blower Control switch on.
Set Condition:
This DTC will set if the BCM sees a request for A/C from the A/C - Heater
Control with the Mode Control switch in the Panel-Heater position, Mix-Heater position,
or Floor-Heater mode position.
POSSIBLE CAUSES
CONTROL HEAD - A/C SWITCH SENSE INCORRECT
BODY CONTROL MODULE - A/C SWITCH SENSE INCORRECT
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, record and erase Body Computer DTCs.
Ensure that the Rear Window Defogger is off.
Put the Mode Control switch in the Recirc/Bi-Level (full left) position.
Start the engine.
With the DRBIII
t in Sensor Display, read the A/C EBL Switch voltage and the Mode
Switch voltage in each door position.
Look for the following approximate voltage readings:
Recirc-A/C position: A/C EBL Switch, 4.42 volts, Mode Switch, 1.32 volts.
Panel-A/C position: A/C EBL Switch, 4.42 volts, Mode Switch, 3.20 volts.
Mix-A/C position: A/C EBL Switch 4.42 volts, Mode Switch 5.07 volts.
Panel-Heater position: A/C EBL Switch 10.79 volts, Mode Switch 3.20 volts.
Mix-Heater position: A/C EBL Switch 10.79 volts, Mode Switch 5.07 volts.
Floor-Heater position: A/C EBL Switch 10.79 volts, Mode Switch 7.16 volts.
Does DRBIII
t display the approximate voltages for each Mode Control switch
position?
All
Yes
→ Go To 2
No
→ Replace the A/C - Heater Control in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition on.
With the DRBIII
t, erase Body Computer DTCs.
Start the engine.
Turn the Blower Control switch on.
With the DRBIII
t, read DTCs while slowly turning the Mode Control switch to each
of the door positions several times.
Does the DRBIII
t display: A/C Head, A/C Switch Failure?
All
Yes
→ Replace and program the Body Control Module in accordance
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
263
HEATING & A/C
Symptom:
A/C HEAD, EBL INPUT SHORTED TO BATTERY - MTC
When Monitored and Set Condition:
A/C HEAD, EBL INPUT SHORTED TO BATTERY - MTC
When Monitored:
With the ignition on.
Set Condition:
This DTC will set if voltage on the A/C Switch Sense pin exceeds 90% of
ignition voltage for 10 seconds.
POSSIBLE CAUSES
A/C SWITCH SENSE CIRCUIT SHORTED TO VOLTAGE
BODY CONTROL MODULE - A/C SWITCH SENSE SHORTED TO VOLTAGE
A/C HEATER CONTROL
INTERMITTENT WIRING PROBLEM
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, record and erase Body Computer DTC’s.
Turn the ignition off.
Disconnect the A/C - Heater Control C1 harness connector.
Turn the ignition on.
Measure the voltage of the A/C Switch Sense circuit.
Is the voltage above 10.0 volts?
All
Yes
→ Go To 2
No
→ Go To 3
2
Turn the ignition off.
Disconnect the A/C - Heater Control C1 harness connector.
Disconnect the Body Control Module C2 harness connector.
Turn the ignition on.
Measure the voltage of the A/C Switch Sense circuit.
Is there any voltage present?
All
Yes
→ Repair the A/C Switch Sense circuit for a short to voltage.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace and program the Body Control Module in accordance
with the Service Information.
Calibration must be performed after repair/replacement is com-
pleted.
Perform BODY VERIFICATION TEST - VER 1.
264
HEATING & A/C
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