Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

BATTERY WAS DISCONNECTED
Has the battery been disconnected, lost it's charge, or been replaced recently?

Yes
- Disconnecting or replacing the battery will set this DTC. Erase the DTC.
- Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to 42RLE TRANSMISSION VERIFICATION TEST .
No
- Go To 2.
WAS Quick Learn PERFORMED
Has a Quick Learn procedure been performed?

Yes
- Performing Quick Learn will set this DTC. Erase the DTC.
- Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to 42RLE TRANSMISSION VERIFICATION TEST .
No
- Go To 3.
PCM REPLACED OR DISCONNECTED
Has the PCM been replaced or disconnected?

Yes
- Replacing or disconnecting the PCM will set this DTC. Erase the DTC.
- Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to 42RLE TRANSMISSION VERIFICATION TEST .
No
- Go To 4.
FUSED B(+) CIRCUIT

Fig 1: Checking Fused B(+) Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off to the lock position.
2. Disconnect the PCM C1 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
  
  CAUTION:
  Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis.
3. Using a 12-volt test light connected to ground, check the Fused B(+) circuit at the appropriate terminal of the PCM Pinout Box.
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Go To 5.
  No
  - Repair the Fused B(+) circuit for an open. If the fuse is open make sure to check for a short to ground.
  - Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to 42RLE TRANSMISSION VERIFICATION TEST .
(Z908) GROUND CIRCUITS

Fig 2: Checking Ground Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off to the lock position.
2. Disconnect the PCM C4 harness connector.
  NOTE:
  Check connectors - Clean/repair as necessary.
3. Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuits in the appropriate terminal of the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position).
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly for all of the ground circuits?
  
  Yes
  - Go To 6.
  No
  - Repair the Ground circuits for an open.
  - Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to 42RLE TRANSMISSION VERIFICATION TEST .
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle the wires while checking for shorted and open circuits.
4. With the scan tool, check the Event Data to help identify the conditions in which the DTC was set.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the 42RLE TRANSMISSION VERIFICATION TEST. Refer to 42RLE TRANSMISSION VERIFICATION TEST .
  No
  - Test Complete.