Chrysler Town, Dodge Caravan. Manual — part 881
Symptom:
LEFT CYLINDER LOCK SWITCH INPUT OPEN OR SHORT TO
VOLTAGE
When Monitored and Set Condition:
LEFT CYLINDER LOCK SWITCH INPUT OPEN OR SHORT TO VOLTAGE
When Monitored:
At all times when battery power is supplied to the Body Control
Module.
Set Condition:
When the BCM senses voltage to the cylinder lock switch above 4.6 volts
for over 10 seconds.
POSSIBLE CAUSES
DTC PRESENT
BODY CONTROL MODULE - LEFT CYLINDER LOCK SWITCH VOLTAGE LOW
CYLINDER LOCK SWITCH GROUND OPEN
CYLINDER LOCK SWITCH MUX OPEN
CYLINDER LOCK SWITCH OPEN
CYLINDER LOCK SWITCH MUX SHORT TO VOLTAGE
BODY CONTROL MODULE - LEFT CYLINDER LOCK SWITCH MUX SHORT TO VOLTAGE
TEST
ACTION
APPLICABILITY
1
NOTE: When this code is present, the VTSS indicator will illuminate solid during the
arming process.
With the DRBIII
t, record and erase DTC’s.
Cycle the ignition switch from ON to OFF to ON.
With the DRBIII
t, read DTC’s.
Remove the key and operate the door locks several times from the Left Cylinder Lock
Switch while monitoring the DRBIII
t.
Wait 10 seconds.
Does the DRBIII
t display LEFT CYL LOCK SW INPUT OPEN OR SHORT TO
VOLTAGE?
All
Yes
→ Go To 2
No
→ Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2
With the DRBIII
t in Sensors, read the LEFT CYL LOCK SW voltage.
Does the DRBIII
t display 4.0 volts or greater?
All
Yes
→ Go To 3
No
→ Disconnect the BCM harness connector(s). Check connectors -
Clean/repair as necessary. If okay, replace the Body Control
Module.
Perform BODY VERIFICATION TEST - VER 1.
760
POWER DOOR LOCKS/RKE
TEST
ACTION
APPLICABILITY
3
Disconnect the Left Cylinder Lock Switch connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit in the
harness connector.
Does the test light illuminate brightly?
All
Yes
→ Go To 4
No
→ Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4
Disconnect the Left Cylinder Lock Switch connector.
Measure the voltage between Cylinder Lock Switch Mux circuit and Ground in the
harness connector.
Select the voltage present.
All
Below 4.2 volts.
Repair the Cylinder Lock Switch Mux circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
Between 4.3 volts and 5.2 volts.
Replace the Cylinder Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
Above 5.3 volts.
5
Disconnect the Left Cylinder Door Lock Switch connector.
Disconnect the Body Control Module C3 connector.
NOTE: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Measure the voltage between Left Cylinder Lock Switch Mux circuit and ground.
Is there any voltage present?
All
Yes
→ Repair the Cylinder Lock Switch Mux circuit for a short to
voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
761
POWER DOOR LOCKS/RKE
LEFT CYLINDER LOCK SWITCH INPUT OPEN OR SHORT TO VOLTAGE
—
Continued
Symptom:
LEFT CYLINDER LOCK SWITCH INPUT SHORT
When Monitored and Set Condition:
LEFT CYLINDER LOCK SWITCH INPUT SHORT
When Monitored:
At all times when battery power is supplied to the Body Control
Module.
Set Condition:
When the BCM senses voltage to the cylinder lock switch below .5 volts for
over 10 seconds.
POSSIBLE CAUSES
DTC PRESENT
CYLINDER LOCK SWITCH SHORTED
CYLINDER LOCK SWITCH MUX CIRCUIT SHORTED
BODY CONTROL MODULE - LEFT CYLINDER LOCK SWITCH VOLTAGE SHORTED
TEST
ACTION
APPLICABILITY
1
NOTE: When this code is present, the VTSS indicator will stay on solid during the
arming process.
With the DRBIII
t, record and erase DTC’s.
Cycle the ignition switch from ON to OFF to ON.
With the DRBIII
t, read DTC’s.
Remove the key and operate the door locks several times from the Left Cylinder Lock
Switch while monitoring the DRBIII
t.
Wait 10 seconds.
Does the DRBIII
t display LEFT CYL LOCK SW INPUT SHORT?
All
Yes
→ Go To 2
No
→ Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2
Disconnect the Left Cylinder Lock Switch connector.
With the DRBIII
t in Sensors, read the LEFT CYL SW MUX circuit
Is the voltage above 4.6 volts?
All
Yes
→ Replace the Cylinder Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
762
POWER DOOR LOCKS/RKE
TEST
ACTION
APPLICABILITY
3
Disconnect the Right Cylinder Lock Switch connector.
Disconnect the Body Control Module C3 connector.
Measure the resistance between Cylinder Lock Switch Mux circuit and ground.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Cylinder Lock Switch Mux circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
4
If there are no possible causes remaining, view repair.
All
Repair
Disconnect the BCM harness connector(s). Check connectors -
Clean/repair as necessary. If okay, replace the Body Control
Module.
Perform BODY VERIFICATION TEST - VER 1.
763
POWER DOOR LOCKS/RKE
LEFT CYLINDER LOCK SWITCH INPUT SHORT —
Continued
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