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.

ACTIVE DTC
NOTE: If any other IAC Motor or Throttle Body DTCs are present, they must be diagnosed and repaired before continuing this test.
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 possible serious or fatal injury.
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 .
AIR INDUCTION SYSTEM
Inspect the air induction system for the following problems:
- Restrictions - dirty air cleaner, foreign material trapped in the air intake tube, etc.
- Leaks - air intake tube connection, air cleaner housing, etc.
Were any problems found?

Yes
- Repair as necessary.
- Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
No
- Go to step 3
PCV SYSTEM
Inspect the PCV system for the following problems:
- Restrictions - sticking valve, collapsed hoses or tubes, obstructed passages or ports, etc.
- Leaks - cracked or damaged hoses or tubes, poor hose or tube connections, PCV valve stuck open, etc.
Were any problems found?

Yes
- Repair as necessary.
- Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
No
- Go to step 4
THROTTLE BODY OPERATION / IAC MOTOR OPERATION
1. Inspect the throttle body for carbon build up, other restrictions, and a bent throttle plate using a straight edge.
2. If the throttle plate does not close entirely it may be bent and needs to be replaced.
3. Verify that the throttle cable between the Accelerator Pedal and APPS is not binding on ETC equipped vehicles.
4. Verify the throttle cable between the Accelerator Pedal and Throttle
  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.
5. While the vehicle is running, lightly tap on ETC Motor or IAC Motor where applicable, with your hand, and listen for idle to raise.
  Were any problems found or did the idle fluctuate while tapping on the ETC Motor or IAC Motor?
  
  Yes
  - Repair as necessary.
  - Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
  No
  - Go to step 5
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 .