Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 587
*ONE PASSENGER DOOR LOCK INOPERATIVE
For a complete wiring diagram Refer to Section 8W.
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POWER LOCKS - ELECTRICAL DIAGNOSTICS
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Possible Causes
(P392) OR (P393) DOOR LOCK DRIVER CIRCUIT OPEN
(P392) OR (P393) DOOR LOCK DRIVER CIRCUIT SHORT TO GROUND
(P303) PASSENGER DOOR UNLOCK DRIVER CIRCUIT OPEN
(P303) PASSENGER DOOR UNLOCK DRIVER CIRCUIT SHORT TO GROUND
DOOR LATCH
Diagnostic Test
1.
PASSENGER DOOR LATCH INOPERATIVE
NOTE: Graphics in this test show Passenger Front Latch (LHD) but the other 2 passenger latches are iden-
tical. They are also similar for RHD.
Turn the ignition off.
Disconnect the inoperative Passenger Door latch connector.
Connect a test light between the (P392/3) Door Lock Driver circuit and
the (P303) Passenger Door Unlock Driver circuit.
Close the front doors or trip the door latches to the closed position.
Operate the door locks in both positions and observe the test light.
Does the test light illuminate brightly for approximately 300
ms. when the door locks are actuated?
Yes
>> Replace the Passenger Door Latch.
Perform BODY VERIFICATION TEST - VER 1 (Refer to
BODY VERIFICATION TEST - VER 1).
No
>> Go To 2
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POWER LOCKS - ELECTRICAL DIAGNOSTICS
8N - 47
2.
CHECK (P303) PASSENGER DOOR UNLOCK DRIVER CIRCUIT FOR AN OPEN
Disconnect the Cluster C1 connector.
Measure the resistance of the (P303) Passenger Door Unlock Driver
circuit between the Latch connector and the Cluster C1 connector.
Is the resistance below 2.0 ohms?
No
>> Repair the (P303) Passenger Door Unlock Driver circuit for
an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
Yes
>> Go To 3
3.
CHECK (P303) PASSENGER DOOR UNLOCK DRIVER CIRCUIT FOR A SHORT TO GROUND
Measure the resistance between Ground and the (P303) Passenger
Door Unlock Driver circuit.
Is the resistance below 1000.0 ohms?
Yes
>> Repair the (P303) Passenger Door Unlock Driver circuit for
a short to ground.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
No
>> Go To 4
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POWER LOCKS - ELECTRICAL DIAGNOSTICS
LX
4.
CHECK (P392/3) DOOR LOCK DRIVER CIRCUIT FOR AN OPEN
Measure the resistance of the (P392/3) Door Lock Driver circuit
between the Cluster C1 connector and the Passenger Door Latch con-
nector.
Is the resistance below 2.0 ohms?
Yes
>> Repair the (P392/3) Door Lock Driver circuit for a short to
ground.
No
>> Repair the (P392/3) Door Lock Driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to
BODY VERIFICATION TEST – VER 1).
LX
POWER LOCKS - ELECTRICAL DIAGNOSTICS
8N - 49
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