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 & EQUIPMENTANTI-THEFT SYSTEMSHANDS FEED MODULE (HFM) - ELECTRICAL DIAGNOSTICSDTC TROUBLESHOOTINGB1439-PHONE SWITCH STUCKDIAGNOSTIC TEST
2009 Jeep Patriot Limited, EDG, Standard
Diagnostic Test
2009 Jeep Patriot Limited, EDG, StandardSECTION Diagnostic Test
- CHECK FOR ACTIVE DTCS
- With the scan tool, read the active DTC's.
- Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle.
- With the scan tool, read the active DTC's.
Does the scan tool display this DTC as active?
Yes
- Go to step 2
No
- If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
- CHECK THE VOLTAGE OF THE (X730) VOICE RECOGNITION/PHONE SWITCH SIGNAL
- Turn the ignition off.
- Disconnect the Inside Rear View Mirror C2 harness connector.
- Turn the ignition on.
- With the scan tool, monitor the VR Phone Switch voltage.
- While monitoring the VR Phone Switch voltage, momentarily connect a jumper wire between (X730) Voice Recognition/Phone Switch Signal circuit and ground.NOTE: The scan tool sensor voltage should switch from above 4.7 volts when the jumper is not connected to below 0.6 volts when the jumper is connected.
Does the sensor voltage switch from above 4.7 volts to below 0.6 volt as described?
Yes
- Replace the Inside Rear View Mirror in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
No
- Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Hands Free Module in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1. 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.