2014 Jeep Wrangler JK Factory Service Manual 28 - DTC-Based Diagnostics

P062F-INTERNAL CONTROL MODULE EEPROM ERROR

For a complete wiring diagram, refer to the Wiring Information.

When Monitored:
With the ignition on.
Set Condition:
The Powertrain Control Module (PCM) detects an internal failure.

Possible Causes
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

1. DTC IS ACTIVE

1.	Ignition on, engine not running.

2.	With the scan tool, erase DTCs in the Powertrain Control Module (PCM).

3.	Monitor the scan tool for at least two minutes.

4.	Cycle the ignition key off and on several times, leaving the ignition on for at least 10 seconds at a time.

5.	Start the engine.

6.	Perform several engine run cycles, turning the ignition off for at least 20 seconds between each engine run cycle.

7.	With the scan tool, select View DTCs.

Did this DTC return?

Yes

Go To 2

No

Perform the INTERMITTENT DTC diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

2. POWERTRAIN CONTROL MODULE

1.	Using the wiring diagram/schematic as a guide, inspect the Powertrain Control Module (PCM) wiring and connectors.

2.	Look for any chafed, pierced, pinched, or partially broken wires.

3.	Look for broken, bent, pushed out or corroded terminals.

4.	Perform any Technical Service Bulletins that may apply.

Were any problems found?

Yes

Repair as necessary.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

No

Replace the Powertrain Control Module in accordance with the service information.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).