Chrysler Voyager. Manual — part 217

Symptom:

B1803 FLAME DETECTED PRIOR TO COMBUSTION

When Monitored and Set Condition:

B1803 FLAME DETECTED PRIOR TO COMBUSTION

When Monitored:

During DCHA start up.

Set Condition:

This DTC will set if the Flame Sensor resistance is not within the expected

parameters.

POSSIBLE CAUSES

FLAME SENSOR 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.

295

CABIN HEATER

Symptom:

B1811 HEATER OVERHEATED

When Monitored and Set Condition:

B1811 HEATER OVERHEATED

When Monitored:

After DCHA activation, when the system is in a steady state of

operation.

Set Condition:

This DTC will set if the Coolant Temperature Sensor resistance is not

within the expected parameters (coolant temperature in the Heater Module exceeds 125°C
[257°F]).

POSSIBLE CAUSES

DCHA HEATER MODULE FAULT

DCHA COOLANT HOSES RESTRICTED/LEAKING/DAMAGED

ENGINE’S COOLING SYSTEM FAULT

DCHA CONTROL UNIT FAULT

B1811 CLEARED, ADDITIONAL DTC(S) PRESENT

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.
NOTE: If there is an internal leak in the Heater Module, a continuous loud
chunking or grinding noise may have been heard coming from the DCHA
assembly during the Field Mode test.
Check for engine coolant continuously flowing out of the DCHA exhaust pipe.
Is engine coolant coming out of the DCHA exhaust pipe?

All

Yes

→ Replace the DCHA Heater Module in accordance with the Service

Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

No

→ Go To 2

296

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.
Inspect the DCHA coolant hoses for restrictions, leakage, and damage.
Are the DCHA coolant hoses Ok?

All

Yes

→ Go To 3

No

→ Repair the DCHA coolant hoses as necessary 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.
Check that the engine’s cooling system is operating properly in accordance with the
Service Information.
Is the engine’s cooling system operating properly?

All

Yes

→ Go To 4

No

→ Repair the engine’s cooling system in accordance with the Service

Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

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.
Start the engine.
Allow the engine to reach normal operating temperature.
Turn the engine off.
Allow the engine’s coolant to cool down to a temperature of 50°C (122°F).
Start the engine.
Allow the engine to reach normal operating temperature.
Turn the engine off.
View repair

All

Repair

Go To

5

297

CABIN HEATER

B1811 HEATER OVERHEATED —

Continued

TEST

ACTION

APPLICABILITY

5

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 the 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

6

298

CABIN HEATER

B1811 HEATER OVERHEATED —

Continued