Chrysler Voyager. Manual — part 353

TEST

ACTION

APPLICABILITY

7

Turn the ignition off.
Disconnect the Power Liftgate Module C1 connector.
Measure the resistance between ground and the Liftgate Open Driver circuit.
Wiggle the harness and check for an intermittent short circuit condition.
Is the resistance below 1000.0 ohms?

All

Yes

→ Repair the Liftgate Open Driver circuit for a short to ground.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 8

8

Turn the ignition off.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance between the Ground circuit and the Liftgate Gear Engage
Driver circuit.
Wiggle the harness and check for an intermittent short to ground condition.
Is the resistance below 100.0 ohms?

All

Yes

→ Repair the Liftgate Gear Engage Driver circuit for a short to the

Ground circuit.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 9

9

Ensure all connections to the module and liftgate motor are connected at this time.
Operate the Power Liftgate in both directions if possible.
Does the motor start to lift the liftgate but is very slow and labors extensively?

All

Yes

→ Replace the Power Liftgate Motor assembly.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Replace the Power Liftgate Module

Perform BODY VERIFICATION TEST - VER 1.

839

POWER DOORS - LIFTGATE

INCOMPLETE POWER OPEN - OVERCURRENT —

Continued

Symptom:

INCOMPLETE POWER OPEN - TRANSISTOR SHORTED

When Monitored and Set Condition:

INCOMPLETE POWER OPEN - TRANSISTOR SHORTED

When Monitored:

Whenever the power liftgate is performing a power open operation.

Set Condition:

The Power Liftgate Module detects that the motor is rotating (monitors

hall effect pulses) even though the controlled PWM rate is 0 percent. This DTC is set
during the power open (2 second chime period, prior to movement of the liftgate) operation.

POSSIBLE CAUSES

DTC PRESENT

POWER LIFTGATE MODULE

TEST

ACTION

APPLICABILITY

1

With the DRBIII

t, record and erase DTC’s.

Turn the ignition off, wait 10 seconds, then turn the ignition on.
Operate the power liftgate several times if possible.
With the DRBIII

t, read ACTIVE DTCs.

Does the DRBIII

t display INCOMPLETE POWER OPEN - TRANSISTOR

SHORTED?

All

Yes

→ Replace the Power Liftgate Module.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Using the wiring diagram/schematic as a guide, inspect the

wiring and connectors for an intermittent condition. Operate the
liftgate several times and check for any binding conditions.
Perform BODY VERIFICATION TEST - VER 1.

840

POWER DOORS - LIFTGATE

Symptom:

INCOMPLETE POWER OPEN - VOLTAGE BELOW MINIMUM
LEVEL

When Monitored and Set Condition:

INCOMPLETE POWER OPEN - VOLTAGE BELOW MINIMUM LEVEL

When Monitored:

Whenever the power liftgate is performing a power open operation.

Set Condition:

The PLG Module detects that the voltage is below 9.5 volts during the

power open operation.

POSSIBLE CAUSES

DTC PRESENT

MODULE VOLTAGE LOW

BINDING LIFTGATE

DRB OPERATING VOLTAGE LOW

PLG MODULE - HIGH RESISTANCE

POWER LIFTGATE MOTOR

TEST

ACTION

APPLICABILITY

1

With the DRBIII

t, record and erase DTC’s.

Turn the ignition off, wait 10 seconds, then turn the ignition on.
Operate the power liftgate several times if possible.
With the DRBIII

t, read DTCs.

Does the DRBIII

t display INCOMPLETE POWER OPEN - VOLTAGE BELOW

MINIMUM LEVEL?

All

Yes

→ Go To 2

No

→ Using the wiring diagram/schematic as a guide, inspect the

wiring and connectors for an intermittent condition. Operate the
door several times and check for any binding conditions.
Perform BODY VERIFICATION TEST - VER 1.

2

Examine the liftgate for proper fit and alignment, or anything that would cause an
obstruction to proper operation.
Check the prop rods to ensure liftgate will self rise from approximately 1/4 open
position.
Does it take more effort to operate the liftgate than it should?

All

Yes

→ Refer to Service information for the related symptom(s).

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 3

841

POWER DOORS - LIFTGATE

TEST

ACTION

APPLICABILITY

3

NOTE: Test the battery to ensure it is fully charged and in good condition
before proceeding.
Turn the ignition off.
Turn all lights and accessories off.
With the DRBIII

t in 9Power Liftgate9 9Monitor Display9 9PCI Bus Info9 read the

9Battery Voltage9 and compare it to the 9PLG Bat Volts Input9.
NOTE: If the difference is greater than 0.5 volts, backprobe the Fused B(+)
at the module to verify.
Does the voltage vary more than 0.5 volts?

All

Yes

→ Using the wiring diagram/schematic as a guide, inspect the

wiring and connectors. Locate and repair the reason for the
voltage drop.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 4

4

Turn the ignition off.
Turn all lights and accessories off.
With the DRBIII

t in 9Power Liftgate99 9Monitor Display9 9PCI Bus Info9 read the

BATTERY VOLTAGE and compare it to the MODULE VOLTAGE.
Operate the power liftgate and observe the voltage difference.
NOTE: If the difference is greater than 1.6 volts, backprobe the Fused B(+)
at the module to verify.
Does the voltage vary more than 1.6 volts when the liftgate is operating??

All

Yes

→ Using the wiring diagram/schematic as a guide, inspect the

wiring and connectors. Locate and repair the reason for the
voltage drop.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 5

5

Turn the ignition off.
Turn all lights and accessories off.
Open the Liftgate.
Remove the left rear trim panel to gain access to the Power Liftgate Module.
Remove the PLG module but leave it connected.
Backprobe voltmeter leads between the Fused B(+) and the Liftgate Open Driver
circuits in the PLG C1 connector.
Close the Liftgate.
Operate the power liftgate in the OPEN position and observe the voltage difference.
Does the voltage vary more than 0.2 volts when the liftgate is operating??

All

Yes

→ Replace the Power Liftgate Module.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 6

6

If there are no possible causes remaining, view repair.

All

Repair

Check the wiring and connections from the module to the motor
for high resistance. If the wiring is okay, replace the Power
Liftgate Motor assembly.
Perform BODY VERIFICATION TEST - VER 1.

842

POWER DOORS - LIFTGATE

INCOMPLETE POWER OPEN - VOLTAGE BELOW MINIMUM LEVEL —

Continued