Chrysler Town, Dodge Caravan. Manual — part 893
Symptom:
INCOMPLETE LATCH RELEASE - RATCHET SWITCH FAILURE
When Monitored and Set Condition:
INCOMPLETE LATCH RELEASE - RATCHET SWITCH FAILURE
When Monitored:
Whenever the power liftgate is performing a release operation.
Set Condition:
The pawl switch was grounded but the ratchet switch remained open. This
code will set only in the release operation.
POSSIBLE CAUSES
DTC PRESENT
BINDING DOOR
POWER LIFTGATE MODULE - RATCHET CIRCUIT
GROUND WIRE OPEN
LIFTGATE AJAR SWITCH SENSE WIRE OPEN
RATCHET SWITCH
TEST
ACTION
APPLICABILITY
1
NOTE: This DTC will only set during the releasing operation after the 4
second time out. This may make it difficult to reproduce.
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 LATCH RELEASE - RATCHET SWITCH
FAILURE?
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 or other obstruc-
tions.
Perform BODY VERIFICATION TEST - VER 1.
2
Examine the liftgate for proper fit and alignment, loose/ hard or torn seals, worn
teeth on the gears or anything that would cause an obstruction to proper operation.
Manually operate the liftgate of a known good vehicle and notice the effort needed to
open and close.
Compare the effort needed on the disabled liftgate.
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
808
POWER DOORS - LIFTGATE
TEST
ACTION
APPLICABILITY
3
With the DRBIII
t in Inputs/Outputs, read the RATCHET state.
Open the liftgate to full open position.
Using a screwdriver, click the latch to the second detent while observing the
DRBIII
t.
Unlatch the latch by pressing the handle switch or using the key and observe the
DRBIII
t for a state change.
Repeat this step several times while moving the liftgate in different positions and
wiggling the wiring harness to check for an intermittent short.
Did the DRB111
t show the switch state changes correctly every time?
All
Yes
→ Replace the Power Liftgate Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
4
Disconnect the Power Liftgate C2 connector.
Disconnect the Liftgate Cinch/Release Motor connector.
Measure the resistance of the Ground wire between the PLG C2 connector (cavity 20)
and the Liftgate Cinch/Release Motor connector (cavity 1).
Wiggle the harness while observing the ohmmeter.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 5
No
→ Repair the Ground wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
5
Disconnect the Power Liftgate Module C2 connector.
Disconnect the Liftgate Cinch/Release Motor connector (latch assembly).
Measure the resistance of the Liftgate Ajar Switch Sense wire between the PLG C2
connector and the Liftgate Cinch/Release Motor connector.
Wiggle the harness and move the liftgate in different positions while observing the
ohmmeter.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 6
No
→ Repair the Liftgate Ajar Switch Sense wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
6
If there are no possible causes remaining, view repair.
All
Repair
Replace the Ratchet Switch (latch assembly).
Perform BODY VERIFICATION TEST - VER 1.
809
POWER DOORS - LIFTGATE
INCOMPLETE LATCH RELEASE - RATCHET SWITCH FAILURE —
Continued
Symptom:
INCOMPLETE LATCH RELEASE- PAWL SWITCH FAILURE
When Monitored and Set Condition:
INCOMPLETE LATCH RELEASE- PAWL SWITCH FAILURE
When Monitored:
Whenever the power liftgate is operating in an opening direction.
Set Condition:
The release operation was not completed due to the non-transition of the
pawl switch during the power release operation. The ratchet switch was detected as
grounded but the pawl remained open. This code is set during the power releasing
operation from a fully closed liftgate.
POSSIBLE CAUSES
DTC PRESENT
BINDING DOOR
POWER LIFTGATE MODULE - PAWL CIRCUIT
GROUND WIRE OPEN
PAWL SWITCH SENSE WIRE OPEN
PAWL SWITCH
TEST
ACTION
APPLICABILITY
1
NOTE: This DTC will only set during the cinching operation after the 4
second time out. This may make it difficult to reproduce.
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 LATCH RELEASE - PAWL SWITCH
FAILURE?
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 or other obstruc-
tions.
Perform BODY VERIFICATION TEST - VER 1.
2
Examine the liftgate for proper fit and alignment, loose/ hard or torn seals, worn
teeth on the gears or anything that would cause an obstruction to proper operation.
Manually operate the liftgate of a known good vehicle and notice the effort needed to
open and close.
Compare the effort needed on the disabled liftgate.
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
810
POWER DOORS - LIFTGATE
TEST
ACTION
APPLICABILITY
3
With the DRBIII
t in Inputs/Outputs, read the PAWL state.
Open the liftgate to full open position.
Using a screwdriver, click the latch to the first detent while observing the DRB111
t.
Unlatch the latch by pressing the handle switch or using the key and observe the
DRB111
t for a state change.
Repeat this step several times while moving the liftgate in different positions and
wiggling the wiring harness to check for an intermittent open..
Did the DRB111
t show the switch state changes correctly every time?
All
Yes
→ Replace the Power Liftgate Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
4
Disconnect the Power Liftgate C2 connector.
Disconnect the Liftgate Cinch/Release Motor connector.
Measure the resistance of the Ground wire between the PLG C2 connector (cavity 20)
and the Liftgate Cinch/Release Motor connector (cavity 1).
Wiggle the harness while observing the ohmmeter.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 5
No
→ Repair the Ground wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
5
Disconnect the Liftgate Control Module C2 connector.
Disconnect the Liftgate Cinch/Release Motor connector (latch assembly).
Measure the resistance of the Liftgate Pawl Switch Sense circuit between the PLG
C2 connector and the Liftgate Cinch/Release Motor connector.
Wiggle the harness while observing the ohmmeter.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 6
No
→ Repair the Liftgate Pawl Switch Sense wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
6
If there are no possible causes remaining, view repair.
All
Repair
Replace the Liftgate Pawl Switch (latch assembly).
Perform BODY VERIFICATION TEST - VER 1.
811
POWER DOORS - LIFTGATE
INCOMPLETE LATCH RELEASE- PAWL SWITCH FAILURE —
Continued
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