Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSJEEP2009PATRIOT LIMITED, EDG, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTENTERTAINMENT SYSTEMS(CABIN COMPARTMENT NODE (CCN) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGB1806-PASSENGER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOWDIAGNOSTIC TEST

2009 Jeep Patriot Limited, EDG, Standard

Diagnostic Test

2009 Jeep Patriot Limited, EDG, StandardSECTION Diagnostic Test

TEST FOR INTERMITTENT CONDITION
1. With the scan tool, record and erase the DTCs
2. Operate the Passenger Door Lock Switch in all positions several times.
3. Cycle the ignition from on to off.
4. Turn the ignition on.
5. With the scan tool, read the DTCs.
  Does the scan tool display B1806-PASSENGER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOW?
  
  Yes
  - Go to step 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 the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
DOOR LOCK SWITCH SHORTED

Fig 1: Checking Door Lock Switch
Courtesy of CHRYSLER LLC
1. With the scan tool, erase the DTCs.
2. Disconnect the Passenger Window/Door Lock Switch connector.
3. With the scan tool, read the DTCs.
  Does the scan tool display B1806-PASSENGER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOW?
  
  No
  - Replace the Passenger Window/Door Lock Switch.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  Yes
  - Go to step 3
(P696) PASSENGER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO GROUND

Fig 2: Checking Passenger Door Lock Switch MUX Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Cluster C2 connector.
3. Measure the resistance between ground and the (P696) Passenger Door Lock Switch Mux circuit.
  Is the resistance below 10, 000 ohms?
  
  Yes
  - Repair the (P696) Passenger Door Lock Switch Mux circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Instrument Cluster in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.