Dodge Nitro. Manual — part 853

Fig. 3: Measuring Resistance Between Ground And (G161) Driver Door Lock Switch Mux Circuit
In Driver Window/Door Lock Switch C2 Connector
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the TIPM C7 connector.

Measure the resistance between ground and the (G161) Driver Door Lock Switch Mux circuit.

Is the resistance below 1,000.0 ohms?

Yes

Repair the (G161) Driver Door Lock Switch Mux circuit for a short to ground.

Perform BODY VERIFICATION TEST - VER 1 .

No

Go to 4).

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro

4) (G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO THE (P37) DOOR
LOCK SWITCH RETURN CIRCUIT

Fig. 4: Measuring Resistance Between (G161) Driver Door Lock Switch Mux Circuit And (P37)
Door Lock Switch Return Circuit In Switch C2 Connector
Courtesy of CHRYSLER LLC

Measure the resistance between the (G161) Driver Door Lock Switch Mux circuit and the (P37) Door
Lock Switch Return circuit in the switch C2 connector.

Is the resistance below 1,000.0 ohms?

Yes

Repair the (G161) Driver Door Lock Switch Mux circuit for a short to the (P37) Door Lock Switch
Return circuit.

Perform BODY VERIFICATION TEST - VER 1 .

No

Replace the Totally Integrated Power Module (TIPM) in accordance with service information.

Perform BODY VERIFICATION TEST - VER 1 .

B1803 - DRIVER DOOR LOCK/UNLOCK SWITCH INPUT CIRCUIT STUCK LOCK - DDM

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro

Fig. 5: Lin Bus Circuit Schematic
Courtesy of CHRYSLER LLC

For complete wiring diagrams refer to SYSTEM WIRING DIAGRAMS article.

When Monitored:

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro

Continuously whenever the door module is awake.

Set Condition:

When the Lin Bus circuit is out of range for five seconds.

Diagnostic Test

1) TEST FOR INTERMITTENT CONDITION

With the scan tool, record and erase DTC's

Operate the Driver Door Lock Switch several times.

Turn the ignition on and wait 30 seconds.

With the scan tool, read DTC's.

Does the scan tool display B1803 - DRIVER DOOR LOCK/UNLOCK SWITCH INPUT CIRCUIT
STUCK LOCK?

Yes

Go to 2).

No

The conditions that caused this code to set are not present at this time. Using the wiring
diagram/schematic as a guide, inspect the wiring and connectors.

Perform BODY VERIFICATION TEST - VER 1 .

2) DOOR LOCK SWITCH

Possible Causes

(D500) LIN BUS CIRCUIT SHORT TO GROUND
(D500) LIN BUS CIRCUIT SHORT TO THE (D501) LIN BUS RETURN CIRCUIT
(D500) LIN BUS CIRCUIT OPEN
(D501) LIN BUS RETURN CIRCUIT OPEN
DOOR LOCK SWITCH
DRIVER DOOR MODULE

2007 Dodge Nitro R/T

2007 ACCESSORIES AND EQUIPMENT Power Locks - Electrical Diagnostics - Nitro