Diagnostic Test

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
NOTE: If this DTC sets intermittently, it is possible that the controller is overheating in extremely hot temperatures. This is considered a normal protection operation. No repair is necessary.

NOTE: Low battery voltage can cause excessive current draw in very hot and cold ambient temperatures. Make sure the battery can pass a load test before continuing. Review Freeze Frame information to determine the ambient temperature when the DTC set.
1. 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 can result in personal injury or death.
  
  NOTE: Attempt to operate the vehicle under conditions similar to which the DTC was set.
  
  NOTE: It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set.
2. With a scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go to step 2
  No
  - Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
THROTTLE PLATE INSPECTION
1. Turn the ignition off.
2. Remove the air cleaner assembly.
3. Check for any signs of a foreign material (ice or dirt) on the throttle plate or in the throttle bore that can cause the throttle plate to stick.
  Were any problems found?
  
  Yes
  - Remove the debris if possible or replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and perform the ETC RELEARN function.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 3
(K124) ETC MOTOR (+) CIRCUIT SHORTED TO VOLTAGE

Fig 1: CHECKING ETC MOTOR (+) CIRCUIT FOR SHORT TO VOLTAGE
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Throttle Body harness connector.
3. Disconnect the Powertrain Control Module (PCM) harness connectors.
4. Turn the ignition on.
5. Measure the voltage of the (K124) ETC Motor (+) circuit.
  Is there any voltage present?
  
  Yes
  - Repair the (K124) ETC Motor (+) circuit for a short to voltage.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 4
(K126) ETC MOTOR (-) CIRCUIT SHORTED TO VOLTAGE

Fig 2: CHECKING ETC MOTOR (-) CIRCUIT FOR SHORT TO VOLTAGE
Courtesy of CHRYSLER LLC
1. Measure the voltage of the (K126) ETC Motor (-) circuit.
  Is there any voltage present?
  
  Yes
  - Repair the (K126) ETC Motor (-) circuit for a short to voltage.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 5
(K124) ETC MOTOR (+) CIRCUIT SHORTED TO THE (K126) ETC MOTOR (-) CIRCUIT

Fig 3: CHECKING ETC MOTOR (+) CIRCUIT FOR SHORT TO ETC MOTOR (-) CIRCUIT
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Measure the resistance between the (K124) ETC Motor (+) circuit and the (K126) ETC Motor (-) circuit.
  Is the resistance below 100 ohms?
  
  Yes
  - Repair the short to between the (K124) ETC Motor (+) circuit and the (K126) ETC Motor (-) circuit.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 6
(K124) ETC MOTOR (+) CIRCUIT SHORTED TO GROUND

Fig 4: CHECKING ETC MOTOR (+) CIRCUIT FOR SHORT TO GROUND
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (K124) ETC Motor (+) circuit.
  Is the resistance below 100 ohms?
  
  Yes
  - Repair the short to ground in the (K124) ETC Motor (+) circuit.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 7
(K126) ETC MOTOR (-) CIRCUIT SHORTED TO GROUND

Fig 5: CHECKING ETC MOTOR (-) CIRCUIT FOR SHORT TO GROUND
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (K126) ETC Motor (-) circuit.
  Is the resistance below 100 ohms?
  
  Yes
  - Repair the short to ground in the (K126) ETC Motor (-) circuit.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 8
(K126) ETC MOTOR (-) CIRCUIT OPEN OR HIGH RESISTANCE

Fig 6: CHECKING ETC MOTOR (-) CIRCUIT FOR OPEN OR HIGH RESISTANCE
Courtesy of CHRYSLER 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 Miller Special Tool #8815 to perform diagnosis.
1. Measure the resistance of the (K126) ETC Motor (-) circuit between the Throttle Body connector and the appropriate terminal of special tool #8815.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Go to step 9
  No
  - Repair the (K126) ETC Motor (-) circuit for an open circuit or high resistance.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
(K124) ETC MOTOR (+) CIRCUIT OPEN OR HIGH RESISTANCE

Fig 7: CHECKING ETC MOTOR (+) CIRCUIT FOR OPEN OR HIGH RESISTANCE
Courtesy of CHRYSLER 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 Miller Special Tool #8815 to perform diagnosis.
1. Measure the resistance of the (K124) ETC Motor (+) circuit between the Throttle Body connector and the appropriate terminal of special tool #8815.
  Is the resistance below 5.0 ohms?
  
  Yes
  - Go to step 10
  No
  - Repair the (K124) ETC Motor (+) circuit for an open circuit or high resistance.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
ETC MOTOR

Fig 8: CHECKING ETC MOTOR RESISTANCE
Courtesy of CHRYSLER LLC
1. Reconnect the Throttle Body harness connector.
  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 Miller Special Tool #8815 to perform diagnosis.
2. Measure the resistance between the (K124) ETC Motor (+) circuit and the (K126) ETC Motor (-) circuit in the appropriate terminals of special tool #8815.
  Is the resistance between 2.5 and 25 ohms at closed throttle?
  
  Yes
  - Go to step 11
  No
  - Replace the Throttle Body Assembly. Disconnect the Battery when replacing the Throttle Body Assembly. After installation is complete, use a scan tool and perform the ETC RELEARN function.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
POWERTRAIN CONTROL MODULE (PCM)
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body 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. Refer to any Technical Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure