Chrysler Voyager. Manual — part 214

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.
CAUTION: When using a powered exhaust ventilation system, do not attach
the exhaust ventilation hose directly to the DCHA exhaust pipe. Too much
suction can prevent DCHA operation.
When using a powered exhaust ventilation system, affix the ventilation hose to the
DCHA exhaust pipe or to the vehicle in such a manor that the end of the ventilation
hose remains approximately three inches away from the end of the DCHA exhaust
pipe.
When using a non-powered exhaust ventilation system, affix the ventilation hose
directly to the DCHA exhaust pipe.
Turn the ignition on.
With the DRBIII

t, attempt to communicate with the Cabin Heater Module.

Does the DRBIII

t display: No Response From Cabin Heater Module?

All

Yes

→ Refer to Communication for the related symptom.

Perform CABIN HEATER VERIFICATION TEST - VER 1.

No

→ Go To 2

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.
Turn the ignition on.
With the DRBIII

t, read Cabin Heater DTCs.

Is DTC B1813 Heater In Lockout Mode present?

All

Yes

→ Go To 3

No

→ Go To 4

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.
Start the engine.
Allow the engine to idle.
Turn the ATC’s or MTC’s Power switch on.
Turn the Blower control to the high speed position.
On MTC, set the Blend control to the max heat position.
On ATC, set the Driver temperature control to HI (max heat).
Remove Cabin Heater Fuse #15 from the IPM for a minimum of five seconds, then
reinstall the fuse. The DCHA may attempt to start.
Turn the Blower control off and turn the ATC’s or MTC’s Power switch off.
Turn the engine off.
View repair

All

Repair

Go To

4

283

CABIN HEATER

A. CABIN HEATER PRE-TEST —

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.
NOTE: The DCHA Control will store up to three DTCs in its memory.
NOTE: If the DCHA Control detects a new fault in the DCHA system, one
that is not already stored in its memory, the DCHA Control will clear the
oldest of the three stored DTCs, and it will store the new fault’s DTC.
NOTE: If the DCHA control detects a reoccurrence of a stored fault, the
DCHA control will overwrite that fault’s DTC with the most recent occur-
rence.
Turn the ignition on.
On MTC, set the Blend control to the max cool position.
On ATC, set the Driver temperature control to LO (max cool).
Turn the ATC’s or MTC’s Power switch off.
With the DRBIII

t, record and erase Cabin Heater and FCM DTCs.

Start the engine.
Allow the engine to idle.
Turn the ATC’s or MTC’s Power switch on.
Turn the Blower control to the high speed position.
CAUTION: Do not activate the DCHA Field Mode Test with the engine off.
Failure to follow these manuals may result in internal damage to the
DCHA Heater Module.
NOTE: Do not disconnect the vehicle’s battery or the DCHA’s main power
supply while the DCHA is in operation or in run-down mode. Failure to
follow these instructions may result in excess emissions from the DCHA
during heater operation.
With the DRBIII

t in Cabin Heater, Systems Tests, select Field Mode and press Enter.

The test will run for approx 8.5 minutes.
On MTC, set the Blend control to the max heat position. Upon completion of the Field
Mode Test, proceed as follows:
On ATC, set the Driver temperature control to HI (max heat). Upon completion of the
Field Mode Test, proceed as follows:
With the DRBIII

t, read Cabin Heater and Active FCM DTCs.

Turn the Blower control off and turn the ATC’s or MTC’s Power switch off.
Turn the engine off.
Are any DTCs present?

All

Yes

→ Return to the symptom list and choose the DTC(s). Diagnose and

repair all FCM faults prior to diagnosing DCHA faults. If DTC
B1813 Heater In Lockout Mode reset with other DTC(s), reset the
heater before diagnosing the other DTC(s).
Perform CABIN HEATER VERIFICATION TEST - VER 1.

No

→ Go To 5

284

CABIN HEATER

A. CABIN HEATER PRE-TEST —

Continued

TEST

ACTION

APPLICABILITY

5

Is the symptom Cabin Heater inoperable from the ATC or from the MTC?

All

Yes - MTC

Refer to symptom *Cabin Heater Inoperable From A/C - Heater
Module (MTC) in the Cabin Heater category.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

Yes - ATC

Refer to symptom *Cabin Heater Inoperable From Auto Temp
Control (ATC) in the Cabin Heater category.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

No

→ Let DCHA cool. Inspect fuel line, intake & exhaust, & coolant

hoses for restrictions, obstructions, loose clamps, leakage, etc.
Check connectors. Clean & repair as necessary. Refer to Service
Manual for additional symptom based diagnosis, if necessary.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

285

CABIN HEATER

A. CABIN HEATER PRE-TEST —

Continued

Symptom:

B1000 CONTROL UNIT ERRONEOUS

When Monitored and Set Condition:

B1000 CONTROL UNIT ERRONEOUS

When Monitored:

During DCHA activation.

Set Condition:

This DTC will set if a fault occurs with the DCHA Control Unit’s memory.

POSSIBLE CAUSES

DCHA CONTROL UNIT FAULT

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.
CAUTION: DO NOT PERFORM THIS TEST UNLESS DIRECTED HERE BY
THE CABIN HEATER PRE-TEST. ALWAYS PERFORM THE CABIN HEATER
PRE-TEST PRIOR TO PERFORMING ANY OTHER CABIN HEATER TEST
FOR THE RESULT TO BE VALID.
Turn the ignition off.
View repair

All

Repair

Replace the DCHA Heater Module in accordance with the Service
Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

286

CABIN HEATER