Chrysler Town, Dodge Caravan. Manual — part 903
Symptom:
LOSS OF SBEC MESSAGES
When Monitored and Set Condition:
LOSS OF SBEC MESSAGES
When Monitored:
Whenever the ignition is in the RUN position.
Set Condition:
If the PLG Module does not receive a speed message from the Powertrain
Control Module for over 5 seconds, this code will set.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE POWERTRAIN CONTROL MODULE
POWER LIFTGATE MODULE - LOSS OF SBEC MESSAGES
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, select Engine.
Was the DRBIII
t able to I/D or communicate with the Powertrain Control Module?
All
Yes
→ Go To 2
No
→ Refer to the Communication category for the related symptom(S).
2
With the DRBIII
t, erase DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRBIII
t, read DTC’s.
Did this DTC reset?
All
Yes
→ Replace the Power Liftgate Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
848
POWER DOORS - LIFTGATE
Symptom:
OUTSIDE LIFTGATE HANDLE INPUT SHORT
When Monitored and Set Condition:
OUTSIDE LIFTGATE HANDLE INPUT SHORT
When Monitored:
Whenever the Body Control Module is awake.
Set Condition:
When the BCM senses a voltage of less than 1.0 volts on the Liftgate
Handle Switch Sense circuit for longer than 10 seconds this code will set.
POSSIBLE CAUSES
LIFTGATE HANDLE SWITCH SHORTED
LIFTGATE HANDLE SWITCH SENSE CIRCUIT SHORT TO GROUND
BODY CONTROL MODULE - LIFTGATE HANDLE SWITCH SHORT TO GROUND
TEST
ACTION
APPLICABILITY
1
Disconnect the License Lamp connector (light bar).
With the DRBIII
t, read DTC’s.
Does the DRBIII
t display Outside Liftgate Handle Input Short?
All
Yes
→ Go To 2
No
→ Replace the Liftgate Handle Switch.
Perform BODY VERIFICATION TEST - VER 1.
2
Disconnect the License Lamp connector.
Disconnect the Body Control Module C2 connector.
Measure the resistance between ground and the Liftgate Handle Switch Sense
circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Liftgate Handle Switch Sense circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
If there are no possible causes remaining, view repair.
All
Repair
Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
849
POWER DOORS - LIFTGATE
Symptom:
OUTSIDE LIFTGATE HANDLE INPUT STUCK
When Monitored and Set Condition:
OUTSIDE LIFTGATE HANDLE INPUT STUCK
When Monitored:
Whenever the Body Control Module is awake.
Set Condition:
When the BCM senses a liftgate handle input on the Liftgate Handle
Switch Sense circuit for longer than 10 seconds this code will set.
POSSIBLE CAUSES
LIFTGATE HANDLE SWITCH STUCK
LIFTGATE HANDLE SWITCH SENSE CIRCUIT SHORT TO GROUND
BODY CONTROL MODULE - LIFTGATE HANDLE SWITCH SHORT TO GROUND
TEST
ACTION
APPLICABILITY
1
Disconnect the License Lamp connector (light bar).
With the DRBIII
t, erase DTCs.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
Wait 10 seconds.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display Outside Liftgate Handle Input Stuck?
All
Yes
→ Go To 2
No
→ Replace the Liftgate Handle Switch.
Perform BODY VERIFICATION TEST - VER 1.
2
Disconnect the License Lamp connector.
Disconnect the Body Control Module C2 connector.
Measure the resistance between ground and the Liftgate Handle Switch Sense
circuit.
Is the resistance below 10000.0 ohms?
All
Yes
→ Repair the Liftgate Handle Switch Sense circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
If there are no possible causes remaining, view repair.
All
Repair
Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
850
POWER DOORS - LIFTGATE
Symptom:
OVERHEAD LIFTGATE SWITCH INPUT STUCK
When Monitored and Set Condition:
OVERHEAD LIFTGATE SWITCH INPUT STUCK
When Monitored:
Whenever the BCM is awake.
Set Condition:
When the BCM senses a overhead liftgate switch input for over 10
seconds, this code will set.
POSSIBLE CAUSES
DTC PRESENT
OVERHEAD LIFTGATE SWITCH SHORTED
LIFTGATE SWITCH MUX WIRE SHORT TO GROUND
BODY CONTROL MODULE - OVERHEAD LIFTGATE SWITCH MUX SHORTED
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 Liftgate from the Overhead Console Switch.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display OVERHEAD LIFTGATE SWITCH INPUT STUCK?
All
Yes
→ Go To 2
No
→ Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent condition.
Perform BODY VERIFICATION TEST - VER 1.
2
With the DRBIII
t, erase DTCs.
Disconnect the Overhead Console Switch connector.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
Wait 10 seconds.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display OVERHEAD LIFTGATE SWITCH INPUT STUCK?
All
No
→ Replace the Power Sliding Door Button Module.
Perform BODY VERIFICATION TEST - VER 1.
Yes
→ Go To 3
3
Disconnect the Body Control Module C2 connector.
Disconnect the Overhead Console Switch connector.
Measure the resistance of the Liftgate Switch Mux circuit to ground.
Is the resistance below 4000.0 ohms?
All
Yes
→ Repair the Liftgate Switch Mux wire for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
851
POWER DOORS - LIFTGATE
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