Chrysler P1607: PCM Internal Shutdown Timer Rationality

Is your scanner showing Chrysler P1607?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Chrysler P1607: PCM Internal Shutdown Timer Rationality

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Advanced
Repair Cost
:
$500-$1000
Can I Still Drive?
:
No

What Does The Chrysler P1607 Code Mean?

The purpose of the shut down timer diagnostic is to determine if the Powertrain Control Module (PCM) internal clock is running as expected. This engine off timer is used as an enable condition for various OBD monitors. The rationality test consists of two tests used to evaluate shut down time.

What Are The Potential Causes Of The Chrysler P1607 Code?

  • Cooling system issues
  • Ambient air temperature (AAT) sensor
  • Engine coolant temperature (ECT) sensor
  • Powertrain control module (PCM) software
  • Powertrain control module (PCM)

How Can You Fix The Chrysler P1607 Code?

  • Turn the ignition off.
  • Disconnect the PCM harness connector.
  • Turn the ignition to run.
  • Using a 12-volt test light connected to ground, probe the Fused Ignition Switch Output (Off-Run-Start) cavity C1-12 circuit at the appropriate terminal of the special tool #8815.
  • If the test light illuminate brightly, replace the Powertrain Control Module in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER – 1. If Not, check all related fuses. Repair the Fused Ignition Switch Output circuit. Perform POWERTRAIN VERIFICATION TEST VER – 1.

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Cardone 79-4407 Remanufactured Chrysler Computer (Renewed)
>>> NGK/NTK Ambient Air Temp Sensor AN0009 (76002)
>>> Coolant Temperature Sensor, ECT Temp Sensor Replace 5149077AB

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Check This Video For Reference

Reference Sources

Tagged :
You know someone would like this

Leave a comment

Your email address will not be published. Required fields are marked *