Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, select View DTCs. Record DTC and Freeze Frame information.
3. Start the engine and allow it to reach operating temperature.
  WARNING:
  When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.
  
  NOTE:
  Review Freeze Frame information. Operate the vehicle under conditions similar to which the DTC was set.
4. With the scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2.
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .

FUEL INJECTOR 1 CIRCUIT RESISTANCE

Fig 1: Measuring Resistance Of Fuel Injector 1 Circuit

Courtesy of CHRYSLER GROUP, LLC

Turn the ignition off.
Disconnect the C2 PCM harness connector.
Remove the ASD Relay.
NOTE:
The resistance of the circuit will vary according to the temperature of the injector coil. Use the table below to determine the resistance range of the injector.

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.

Measure the resistance of the Fuel Injector 1 circuit from the appropriate terminal of the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) and the ASD Relay socket.

Fuel Injector Coil Resistance Based on Engine Temperature
Temperature	Resistance
-20° C (-4° F)	10 Ohms (+/-.6 of an Ohm)
20° C (68° F)	12 Ohms (+/-.6 of an Ohm)
60° C (140° F)	14 Ohms (+/-.6 of an Ohm)
100° C (212° F)	16 Ohms (+/-.6 of an Ohm)

Is the resistance of the injector within the specified range?

Yes

Go To 7.

Go To 3.

FUEL INJECTOR 1 WIRING AND CONNECTOR INSPECTION
1. Turn the ignition off.
2. Verify that the Fuel Injector 1 is properly connected to the injector. Disconnect the Fuel Injector 1 connector and Inspect the terminals for any condition that would result in a poor connection.
3. Using the wiring diagram/schematic as a guide, inspect the Fuel Injector 1 wiring and connector.
  - Look for any chafed, pierced, pinched or partially broken wires.
  - Look for broken, bent, pushed out or corroded terminals.
  - Verify that there is good pin to terminal contact in the Injector and Powertrain Control Module connectors.
  Were there any issues?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4.
(F342) ASD CONTROL OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE

Fig 2: Using 12-Volt Test Light Connected To Ground To Check ASD Relay Output Circuit In Fuel Injector Harness Connector
Courtesy of CHRYSLER GROUP, LLC
1. Install the ASD relay
2. Turn the ignition on.
3. With the scan tool, actuate the Auto Shutdown (ASD) Control State.
4. Using a 12-volt test light connected to ground, check the (F342) ASD Control Output circuit in the Fuel Injector 1 harness connector.
  NOTE:
  The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
  
  Is the test light illuminated and bright?
  
  Yes
  - Go To 5.
  No
  - Repair the excessive resistance or open in the (F342) ASD Control Output circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
(K11) INJECTOR 1 CONTROL CIRCUIT OPEN OR HIGH RESISTANCE

Fig 3: Measuring Resistance Of Injector Control Circuit Between Fuel Injector Harness Connector And Appropriate Terminal Of Special Tool #8815
Courtesy of CHRYSLER GROUP, LLC

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.
1. Turn the ignition off.
2. Disconnect the C2 PCM harness connector.
3. Measure the resistance of the (K11) Injector 1 Control circuit between the Fuel Injector 1 harness connector and the appropriate terminal of the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position).
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 6.
  No
  - Repair the excessive resistance or open in the (K11) Injector 1 Control circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
FUEL INJECTOR 1
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Injector 1 and the Powertrain Control Module (PCM).
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.
5. Verify that there is good pin to terminal contact in the Injector and Powertrain Control Module connectors.
  Were there any issues?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace the Fuel Injector 1 in accordance with the Service Information. Refer to INJECTOR(S), FUEL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
(K11) INJECTOR 1 CONTROL CIRCUIT SHORTED TO GROUND

Fig 4: Measuring Resistance Between Ground And Injector Control Circuit In Injector Harness Connector
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Measure the resistance between ground and the (K11) Injector 1 Control circuit in the Fuel Injector 1 harness connector.
  Is the resistance above 100 Ohms?
  
  Yes
  - Go To 8.
  No
  - Repair the (K11) Injector 1 Control circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Injector 1 and the Powertrain Control Module (PCM).
2. Look for any chafed, pierced, pinched or partially broken wires.
3. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the Injector and Control Module connectors.
4. Perform any Technical Service Bulletins that may apply.
  Were there any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .