Chrysler Voyager. Manual — part 222
TEST
ACTION
APPLICABILITY
7
WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA’s EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORM-
ING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
Turn the ignition off.
Disconnect the battery in accordance with the Service information.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the IPM C3 harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Cabin Heater Assist C1 harness connector.
Measure the resistance between ground and the Cabin Heater Assist Control circuit.
Is the resistance below 10K ohms?
All
Yes
→ Repair the Cabin Heater Assist Control circuit for a short to
ground.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
No
→ Go To 8
8
WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA’s EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORM-
ING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
Turn the ignition off.
Disconnect the battery in accordance with the Service information.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the IPM C3 harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Cabin Heater Assist C1 harness connector.
Measure the resistance of the Cabin Heater Assist Control circuit between the Cabin
Heater Assist C1 harness connector and the IPM C3 harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the DCHA Heater Module in accordance with the Service
Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
No
→ Repair the Cabin Heater Assist Control circuit for an open.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
315
CABIN HEATER
CABIN HEATER CONTROL CIRCUIT OPEN (ACTIVE) —
Continued
Symptom:
CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (AC-
TIVE)
When Monitored and Set Condition:
CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (ACTIVE)
When Monitored:
During DCHA activation and operation.
Set Condition:
This DTC will set if the FCM sees a voltage between 5.0 and 15.0 volts on
the Cabin Heater Assist Control circuit.
POSSIBLE CAUSES
DCHA CONTROL UNIT FAULT
CABIN HEATER ASSIST CONTROL CIRCUIT SHORTED TO THE FUSED B(+) CIRCUIT
FCM FAULT
CABIN HEATER ASSIST CONTROL CIRCUIT SHORTED HIGH
TEST
ACTION
APPLICABILITY
1
WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA’s EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORM-
ING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
Turn the ignition off.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Cabin Heater Assist C1 harness connector.
Turn the ignition on.
With the DRBIII
t in FCM, read the active DTCs.
Is the Cabin Heater Relay Short To Battery DTC still active?
All
Yes
→ Go To 2
No
→ Replace the DCHA Heater Module in accordance with the Service
Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
316
CABIN HEATER
TEST
ACTION
APPLICABILITY
2
WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA’s EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORM-
ING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
Turn the ignition off.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Cabin Heater Assist C1 harness connector.
Turn the ignition on.
Measure the voltage between the Cabin Heater Assist Control circuit and ground.
Is there any voltage present?
All
Yes
→ Go To 3
No
→ Replace the FCM in accordance with the Service Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
3
WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA’s EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORM-
ING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
Turn the ignition off.
Disconnect the battery in accordance with the Service information.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the IPM C3 harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Cabin Heater Assist C1 and C2 harness connectors.
Measure the resistance between the Cabin Heater Assist Control circuit and the
Fused B(+) circuit.
Is the resistance below 10K ohms?
All
Yes
→ Repair the Cabin Heater Assist Control circuit for a short to the
Fused B(+) circuit.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
No
→ Go To 4
317
CABIN HEATER
CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (ACTIVE) —
Continued
TEST
ACTION
APPLICABILITY
4
WARNING: DO NOT OPERATE THE DCHA IN AN ENCLOSED AREA SUCH
AS A GARAGE THAT DOES NOT HAVE EXHAUST VENTILATION FACILI-
TIES. ALWAYS VENT THE DCHA’s EXHAUST WHEN OPERATING THE
DCHA. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
PERSONAL INJURY OR DEATH.
WARNING: ALLOW THE DCHA ASSEMBLY TO COOL BEFORE PERFORM-
ING A COMPONENT INSPECTION/REPAIR/REPLACEMENT. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
Turn the ignition off.
Disconnect the battery in accordance with the Service Information.
Remove the FCM in accordance with the Service Information.
Reconnect the IPM C3 harness connector.
Reconnect the battery in accordance with the Service Information.
Turn the ignition on.
NOTE: Check connectors - Clean/repair as necessary.
Disconnect the Cabin Heater Assist C1 harness connector.
Measure the voltage between the Cabin Heater Assist Control circuit and ground.
Is there any voltage present?
All
Yes
→ Repair the Cabin Heater Assist Control circuit for a short to
voltage.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
No
→ Replace the FCM in accordance with the Service Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.
318
CABIN HEATER
CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (ACTIVE) —
Continued
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