Chrysler RG Voyager. Manual — part 111

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 CAN RESULT IN
PERSONAL INJURY OR DEATH.
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.
Verify that there is more than an 1/8 of a tank of fuel in the vehicle’s fuel tank.
Is there more than an 1/8 of a tank of fuel in the vehicle’s fuel tank?

All

Yes

→ Go To 2

No

→ Add fuel to the vehicle’s fuel tank to bring the fuel level above 1/8

of a tank.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

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 CAN 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 CAN RESULT IN PERSONAL INJURY
OR DEATH.
Turn the ignition on.
CAUTION: Do not actuate the Dosing Pump more than two times. Doing so
will put excess fuel in the DCHA Heater Module and cause smoke to emit
from the DCHA exhaust pipe when heater activation occurs.
With the DRBIII

t in Actuators, select Dosing Pump. Listen for the pump to run. A

clicking noise should be heard coming from the pump.
Press Page Back and select No to stop the Dosing Pump actuation.
Does the Dosing Pump run when actuated?

All

Yes

→ Go To 3

No

→ Replace the Dosing Pump in accordance with the Service Infor-

mation.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

413

CABIN HEATER

B1800 NO START —

Continued

TEST

ACTION

APPLICABILITY

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 CAN 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 CAN RESULT IN PERSONAL INJURY
OR DEATH.
Turn the ignition off.
Inspect the DCHA fuel line exterior for restrictions, leakage, and damage.
Verify that the DCHA fuel line is installed correctly.
NOTE: Waxed fuel can obstruct the fuel line and reduce flow. Check for the
appropriate winter grade fuel and replace as necessary.
Check for obstructions in the fuel line. Refer to Fuel Line, Cleaning in the Service
Information.
Is the DCHA fuel line Ok?

All

Yes

→ Go To 4

No

→ Repair the DCHA fuel line as necessary 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 CAN 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 CAN RESULT IN PERSONAL INJURY
OR DEATH.
Turn the ignition off.
Disconnect the Dosing Pump rubber insulators from the splash shield.
Disconnect the fuel line from the fuel outlet side of the Dosing Pump.
Using a suitable length of fuel line, connect one end to the fuel outlet side of the
Dosing Pump and place the other end in a suitable container.
Turn the ignition on.
CAUTION: For the result of this test to be valid, actuate the Dosing Pump
Prime twice if the DCHA fuel supply line was drained and then not primed
prior to performing this test.
NOTE: Allow the Dosing Pump Prime to run the full 45 seconds.
With the DRBIII

t in System Tests, select Dosing Pump Prime.

When the Dosing Pump Prime is complete, measure the amount of fuel in the
container.
Does the Dosing Pump output approx 14 ml (0.5 oz) of fuel in a single Dosing Pump
Prime activation?

All

Yes

→ Go To 5

No

→ Replace the Dosing Pump in accordance with the Service Infor-

mation.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

414

CABIN HEATER

B1800 NO START —

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 CAN 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 CAN RESULT IN PERSONAL INJURY
OR DEATH.
Turn the ignition off.
Inspect the DCHA air intake pipe and exhaust pipe for restrictions and obstructions.
Is the DCHA air intake pipe and exhaust pipe Ok?

All

Yes

→ Replace the DCHA Heater Module in accordance with the Service

Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

No

→ Repair the DCHA air intake/exhaust as necessary in accordance

with the Service Information.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

415

CABIN HEATER

B1800 NO START —

Continued

Symptom:

B1802 POWER SUPPLY OUT OF RANGE: LOW VOLTAGE THRESH-
OLD

When Monitored and Set Condition:

B1802 POWER SUPPLY OUT OF RANGE: LOW VOLTAGE THRESHOLD

When Monitored:

With the engine running.

Set Condition:

This DTC will set if the DCHA’s power supply voltage drops below 10.0

volts for longer than 20 seconds.

POSSIBLE CAUSES

FIELD MODE TEST RUN WITH THE ENGINE OFF

VEHICLE’S BATTERY SYSTEM

VEHICLE’S CHARGING SYSTEM NOT OPERATING PROPERLY

DCHA CONTROL UNIT FAULT

FUSED B+ CIRCUIT HIGH RESISTANCE

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 CAN RESULT IN
PERSONAL INJURY OR DEATH.
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.
Was the Field Mode Test run with the engine off?

All

Yes

→ Rerun the Field Mode Test exactly as it is described in Test 4 of

the Cabin Heater Pre-Test. If DTC B1802 resets, Go To Test #2 of
this symptom. Otherwise, perform other diagnosis and testing as
necessary.
Perform CABIN HEATER VERIFICATION TEST - VER 1.

No

→ Go To 2

416

CABIN HEATER