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 MANUALSJEEP2014GRAND CHEROKEE LAREDO, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 8 (ELECTRONIC SHIFT MODULE (ESM) - ELECTRICAL DIAGNOSTICS - 8HP70 AUTOMATIC TRANSMISSION)DTC TROUBLESHOOTINGP1C86-14-PRNDL DISPLAY-CIRCUIT SHORT TO GROUND OR OPENDIAGNOSTIC TEST
2014 Jeep Grand Cherokee Laredo, AWD
Diagnostic Test
2014 Jeep Grand Cherokee Laredo, AWDSECTION Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
- CHECK IF THE DTC IS CURRENT NOTE:
Verify the upper shift knob is securely fastened to the lower shift knob.
- Turn ignition ON, engine NOT running.
- With the scan tool, clear the DTC.
- Using the Environmental Data recorded earlier, try to duplicate the conditions in which the DTC set. It may be necessary to test drive the vehicle.
- With the scan tool, read ESM DTC's.
Did DTC P1C86-14 reset?
Yes
- Using the schematics as a guide, check the ESM terminals for corrosion, damage or terminal push out. Pay particular attention to power and ground circuits. Check Service Information Tune-ups or Service Bulletins for possible causes that may apply. If no trouble is found, replace the ESM. Refer to SHIFTER, TRANSMISSION, REMOVAL .
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
No
- Go To 2
- INTERMITTENT WIRING AND CONNECTORS
- The conditions necessary to set this DTC are not present at this time.
- Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
- Wiggle the wiring and connectors while checking for any possible open or shorted circuits.
- Check for any Service Information Tune-ups or Technical Service Bulletins that may apply.
Were any problems found?
Yes
- Repair as necessary.
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
No
- Test Complete.
RENDER: 1.0x
NO RELATED
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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.