Chrysler Pacifica. Manual — part 210

Symptom:

INCOMPLETE POWER CLOSE - LIFTGATE DRIVER CIRCUIT
SHORT TO GROUND

When Monitored and Set Condition:

INCOMPLETE POWER CLOSE - LIFTGATE DRIVER CIRCUIT SHORT TO
GROUND

When Monitored:

During chime operation on closing cycle.

Set Condition:

When the module receives a closing command, it momentarily sends 12

volts to the Liftgate Open Driver circuit and then the Liftgate Close Driver circuit. If the
module senses more than a half volt drop, it will stop operations and set this code.

POSSIBLE CAUSES

DTC PRESENT

LIFTGATE OPEN DRIVER WIRE SHORT TO GROUND

LIFTGATE CLOSE DRIVER WIRE SHORT TO GROUND

POWER LIFTGATE MODULE - SHORT TO GROUND

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 CLOSE - LIFTGATE DRIVER

CIRCUIT SHORT TO GROUND?

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
liftgate several times and check for any binding conditions.
Perform BODY VERIFICATION TEST - VER 1.

2

Disconnect the Power Liftgate Module C1 connector.
Measure the resistance between ground and the Liftgate Open Driver circuit.
Is the resistance below 10000.0 ohms?

All

Yes

→ Go To 3

No

→ Go To 5

837

POWER DOORS - LIFTGATE

TEST

ACTION

APPLICABILITY

3

Disconnect the Power Liftgate Module C1 connector.
Disconnect the Power Liftgate Drive Unit connector.
Measure the resistance between ground and the Liftgate Open Driver circuit.
Is the resistance below 10000.0 ohms?

All

Yes

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

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 4

4

Disconnect the Power Liftgate Module C1 connector.
Disconnect the Power Liftgate Drive Unit connector.
Measure the resistance between ground and the Liftgate Close Driver circuit.
Is the resistance below 10000.0 ohms?

All

Yes

→ Repair the Liftgate Close Driver wire for a short to ground.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Replace the Power Liftgate Motor assembly.

Perform BODY VERIFICATION TEST - VER 1.

5

Disconnect the Power Liftgate Drive Unit connector.
Ensure the Power Liftgate Module connectors are connected before proceeding.
Measure the resistance between the Ground (cavity 1) circuit and the Liftgate Open
Driver (cavity 6) circuit in the Drive Unit connector..
Is the resistance below 10000.0 ohms?

All

Yes

→ Replace the Power Liftgate module.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Test Complete.

838

POWER DOORS - LIFTGATE

INCOMPLETE POWER CLOSE - LIFTGATE DRIVER CIRCUIT SHORT
TO GROUND —

Continued

Symptom:

INCOMPLETE POWER CLOSE - OPTICAL SIGNAL MISSING

When Monitored and Set Condition:

INCOMPLETE POWER CLOSE - OPTICAL SIGNAL MISSING

When Monitored:

Whenever the power liftgate is performing a power close operation.

Set Condition:

The PLG Module detects that the motor is rotating (monitors optical

pulses) but no optical pulses are being detected. This code is set during the power close
(after the chime period) operation.

POSSIBLE CAUSES

DTC PRESENT

CLUTCH CONDITION

BINDING LIFTGATE

OPTICAL SENSOR GROUND CIRCUIT OPEN

LIFTGATE OPEN DRIVER CIRCUIT SHORT TO LIFTGATE CLOSE DRIVER CIRCUIT

OPTICAL SENSOR SIGNAL 1 OR 2 WIRE SHORT TO GROUND

OPTICAL SENSOR SUPPLY WIRE OPEN

OPTICAL SENSOR SUPPLY WIRE SHORT TO GROUND

OPTICAL SENSOR SIGNAL 1 OR 2 WIRE OPEN

OPTICAL SENSOR

POWER LIFTGATE MODULE - OPTICAL SENSE

POWER LIFTGATE MODULE - OPTICAL SENSOR SUPPLY OPEN

TEST

ACTION

APPLICABILITY

1

NOTE: NOTE: When this code is set, the module will abort the power close
cycle and begin

(Clutch Pulsing(. This is where the module will cycle the

Liftgate Clutch Driver until the gate stops moving (based on Optical Sensor
inputs).
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 from stop to stop if possible.
With the DRBIII

t, read ACTIVE DTCs.

Does the DRBIII

t display INCOMPLETE POWER CLOSE - OPTICAL SIGNAL

MISSING?

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
liftgate several times and check for any binding conditions.
Perform BODY VERIFICATION TEST - VER 1.

839

POWER DOORS - LIFTGATE

TEST

ACTION

APPLICABILITY

2

Examine the liftgate for proper alignment, worn or binding hinges, weak liftgate prop
assembly, loose/ hard weatherstrip, and track assembly for wear or anything that
would cause an obstruction to proper operation.
If necessary manually operate the power liftgate on a known good vehicle and notice
the effort needed to open and close for comparison.
Especially notice the effort needed to unlatch and close the liftgate.
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

3

Open the liftgate manually to the middle position.
With the DRBIII

t, actuate the CLUTCH ENGAGEMENT.

Try to move the liftgate by hand to the full open and close positions.
NOTE: When the clutch is engaged by the DRBIII

t, you should not be able to

move the liftgate.
Were you able to move the liftgate at all?

All

Yes

→ Replace the Power Liftgate Drive Unit.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 4

4

Disconnect the Power Liftgate Module C1 connector.
Disconnect the Power Liftgate Drive Unit connector.
Measure the resistance between the Liftgate Close Driver circuit and the Liftgate
Open Driver circuit.
Is the resistance below 10000.0 ohms?

All

Yes

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

Close Driver circuit.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 5

5

NOTE: Ensure all the Liftgate connectors are connected before proceeding.
With the DRBIII

t in Sensors, read the OPTICAL SENS 1 and then OPTICAL SENS

2 counts.
Manually open and close the liftgate while observing the DRBIII

t.

Did the sensor counts change smoothly for both sensors as the liftgate was moved to
the full stops?

All

Yes

→ Replace the Power Liftgate Module.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 6

6

Disconnect the Power Liftgate Drive Unit connector.
Using a 12-volt test light connected to 12-volts, check the Optical Sensor Ground
circuit (cavity 3) in the harness connector.
Does the test light illuminate brightly?

All

Yes

→ Go To 7

No

→ Repair the Optical Sensor Ground circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

840

POWER DOORS - LIFTGATE

INCOMPLETE POWER CLOSE - OPTICAL SIGNAL MISSING —

Continued