Chrysler Town, Dodge Caravan. Manual — part 899
TEST
ACTION
APPLICABILITY
8
Disconnect the Power Liftgate Motor connector.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance between ground and the Liftgate Gear Engage Driver circuit.
Is the resistance below 10000.0 ohms?
All
Yes
→ Repair the Liftgate Gear Engage Driver wire for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 9
9
Disconnect the Power Liftgate Motor connector.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance between ground and the Liftgate Gear Disengage Driver
circuit.
Is the resistance below 10000.0 ohms?
All
Yes
→ Repair the Liftgate Gear Disengage Driver wire for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 10
10
If there are no possible causes remaining, view repair.
All
Repair
Replace the Power Liftgate Motor Assembly.
Perform BODY VERIFICATION TEST - VER 1.
11
NOTE: Ensure all connectors are connected before proceeding.
While back probing, measure the Voltage between the Liftgate Gear Engage Driver
circuit and the Liftgate Gear Disengage Driver circuit at the PLG Module connector..
Operate the Power liftgate and observe the voltmeter
Did the voltmeter read above 11.0 volts for at least 1 second while the liftgate was
operating?
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.
12
Disconnect the Power Liftgate Motor connector.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance of the Liftgate Gear Engage Driver circuit between the Power
Liftgate Motor connector and the Power Liftgate Module C2 connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 13
No
→ Repair the Liftgate Gear Engage Driver wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
13
Disconnect the Power Liftgate Motor connector.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance of Liftgate Gear Disengage Driver circuit from the Motor
connector to the PLG Module connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 14
No
→ Repair the Liftgate Gear Disengage Driver wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
832
POWER DOORS - LIFTGATE
INCOMPLETE POWER OPEN - EXCESSIVE H.E. COUNTS/NON ENGAGE-
MENT —
Continued
TEST
ACTION
APPLICABILITY
14
If there are no possible causes remaining, view repair.
All
Repair
Replace the Power Liftgate Motor Assembly.
Perform BODY VERIFICATION TEST - VER 1.
833
POWER DOORS - LIFTGATE
INCOMPLETE POWER OPEN - EXCESSIVE H.E. COUNTS/NON ENGAGE-
MENT —
Continued
Symptom:
INCOMPLETE POWER OPEN - HALL EFFECT SIGNAL MISSING
When Monitored and Set Condition:
INCOMPLETE POWER OPEN - HALL EFFECT SIGNAL MISSING
When Monitored:
Whenever the power liftgate is performing a power open operation.
Set Condition:
The PLG Module detects that the motor is rotating (monitors hall effect
pulses) but no hall effect pulses are being detected. This code is set during the power open
(2 second chime period, prior to liftgate movement) operation.
POSSIBLE CAUSES
DTC PRESENT
POWER LIFTGATE MODULE - HALL EFFECT OPEN
BINDING LIFTGATE
HALL EFFECT GROUND CIRCUIT OPEN
LIFTGATE HALL EFFECT SUPPLY WIRE OPEN
LIFTGATE HALL EFFECT SUPPLY WIRE SHORT TO GROUND
LIFTGATE HALL EFFECT SUPPLY WIRE SHORT TO HARNESS GROUND
LIFTGATE HALL EFFECT SIGNAL WIRE OPEN
LIFTGATE HALL EFFECT SIGNAL WIRE SHORT TO GROUND
LIFTGATE HALL EFFECT SIGNAL WIRE SHORT TO HARNESS 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 from stop to stop if possible.
With the DRBIII
t, read ACTIVE DTCs.
Does the DRBIII
t display INCOMPLETE POWER OPEN - HALL EFFECT 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.
834
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 gear teeth on the Power Liftgate Motor
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.
Were there any mechanical problems found?
All
Yes
→ Refer to Service information for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Operate the liftgate from the full closed position and put an obstacle in it’s path to
make it reverse.
Did the door reverse back to the closed position?
All
Yes
→ Go To 4
No
→ Replace the Power Liftgate Module.
Perform BODY VERIFICATION TEST - VER 1.
4
Disconnect the Power Liftgate Motor connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit.
Does the test light illuminate brightly?
All
Yes
→ Go To 5
No
→ Repair the hall effect ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5
Disconnect the Power Liftgate Motor connector.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance of the Liftgate Hall Effect Supply circuit between the Power
Liftgate Motor connector and the Power Liftgate Module C2 connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 6
No
→ Repair the Liftgate Hall Effect Supply wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
6
Disconnect the Power Liftgate Motor connector.
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance between ground and the Liftgate Hall Effect Supply circuit.
Is the resistance below 100.0 ohms?
All
Yes
→ Repair the Door Motor Hall Effect Supply wire for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 7
835
POWER DOORS - LIFTGATE
INCOMPLETE POWER OPEN - HALL EFFECT SIGNAL MISSING —
Continued
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