Chrysler RG Voyager. Manual — part 254
Symptom:
INCOMPLETE POWER CLOSE - TRANSISTOR SHORTED
When Monitored and Set Condition:
INCOMPLETE POWER CLOSE - TRANSISTOR SHORTED
When Monitored:
Whenever the power liftgate is performing a power close 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 close (2 second chime period, prior to movement of the liftgate) operation.
POSSIBLE CAUSES
DTC PRESENT
LIFTGATE OPEN DRIVER WIRE SHORT TO GROUND
POWER LIFTGATE MODULE SHORT TO GROUND
LIFTGATE CLOSE DRIVER WIRE 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 ACTIVE DTCs.
Does the DRBIII
t display INCOMPLETE POWER CLOSE - TRANSISTOR
SHORTED?
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
Turn the ignition off.
Disconnect the Power Liftgate Module C1 harness connector.
Measure the resistance between ground and the Liftgate Open Driver circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Go To 3
No
→ Replace the Power Liftgate Module.
Perform BODY VERIFICATION TEST - VER 1.
985
POWER DOORS - LIFTGATE
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Power Liftgate Module C1 harness connector.
Disconnect the Power Liftgate Motor connector.
Measure the resistance between ground and the Liftgate Open Driver circuit.
Is the resistance below 1000.0 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
Turn the ignition off.
Disconnect the Power Liftgate Module C1 harness connector.
Disconnect the Power Liftgate Motor connector.
Measure the resistance between ground and the Liftgate Close Driver circuit.
Is the resistance below 1000.0 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.
Perform BODY VERIFICATION TEST - VER 1.
986
POWER DOORS - LIFTGATE
INCOMPLETE POWER CLOSE - TRANSISTOR SHORTED —
Continued
Symptom:
INCOMPLETE POWER CLOSE - VOLTAGE BELOW MINIMUM
LEVEL
When Monitored and Set Condition:
INCOMPLETE POWER CLOSE - VOLTAGE BELOW MINIMUM LEVEL
When Monitored:
Whenever the power liftgate is performing a power close operation.
Set Condition:
The PLG Module detects that the voltage is below 9.5 volts during the
power close 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 CLOSE - 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 fall closed from the approximately 3/4
closed 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
987
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
9Battery Voltage9 and compare it to the 9PLG Bat Volts Input9.
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 Close Driver
circuits in the PLG C1 connector.
Operate the power liftgate in the CLOSED position and observe the voltage
difference.
Does the voltage vary more than 1.0 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.
988
POWER DOORS - LIFTGATE
INCOMPLETE POWER CLOSE - VOLTAGE BELOW MINIMUM LEVEL —
Continued
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