Diagnostic Test

VERIFY ASD DTC
NOTE: Diagnose P0685 - Auto Shutdown Relay Control Circuit first if it set along with this DTC.
1. With a scan tool, erase the DTC.
2. Attempt to start the engine. If the engine will not start, crank the engine for at least 15 seconds. It may be necessary to repeat several times.
  Does the DTC reset?
  
  Yes
  - Go to step 2
  No
  - Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
ENGINE OPERATION
1. Attempt to start the engine.
  Does the engine start?
  
  Yes
  - Go to step 3
  No
  - Go to step 4
(K342) ASD RELAY OUTPUT CIRCUIT(S) OPEN

Fig 1: Checking ASD Relay Output Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Remove the ASD Relay.
3. Disconnect the PCM harness connectors.
  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 PCM Pinout Box 8815 to perform diagnosis.
4. Measure the resistance of the (K342) ASD Relay Output circuit(s) from the Relay connection to the appropriate terminals of special tool #8815.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Go to step 7
  No
  - Repair the open in the (K342) ASD Relay Output circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
ASD RELAY
1. Turn the ignition off.
2. Install a substitute relay in place of the ASD Relay.
3. Ignition on, engine not running.
4. With a scan tool, erase DTCs.
5. Attempt to start the engine.
6. With a scan tool, read DTCs.
  Does the DTC reset?
  
  Yes
  - Go to step 5
  No
  - Replace the ASD Relay.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
(A14) FUSED B+ CIRCUITS

Fig 2: Checking Fused B+ Circuits
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Using a 12-volt test light connected to ground, probe the (A14) Fused B+ circuits at the Relay connection.
  Does the test light illuminate brightly?
  
  Yes
  - Go to step 6
  No
  - Repair the open or short to ground in the (A14) Fused B+ circuits. Inspect the related fuse and repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
(K342) RELAY OUTPUT CIRCUIT OPEN

Fig 3: Checking Relay Output Circuit
Courtesy of CHRYSLER LLC
1. Disconnect the PCM harness connectors.
  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 PCM Pinout Box 8815 to perform diagnosis.
2. Measure the resistance of the (K342) ASD Relay Output circuit from the Relay connection to the appropriate terminals of special tool #8815.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Go to step 7
  No
  - Repair the open in the (K342) ASD Relay Output circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
PCM
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
1. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
  No
  - Replace and program the Powertrain Control Module per Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure