Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
NOTE:
When this DTC is Active the engine speed, torque and vehicle speed are limited to a Limp in mode.

NOTE:
If a 5-Volt supply DTC has also set, diagnose the 5-Volt DTC before continuing.
1. Ignition on, engine not running.
2. With the scan tool, read the active DTCs.
  Is the DTC Active at this time?
  
  Yes
  - Go To 2
  No
  - Go To 7
THROTTLE POSITION SENSOR
1. Turn the ignition off.
2. Disconnect the Throttle Body Assembly harness connector.
3. Ignition on, engine not running.
4. With the scan tool monitor the TP Sensor 2 voltage.
  Is the voltage below 0.5 of a Volt?
  
  Yes
  - Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module harness connectors. If OK, disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assembly. Refer to THROTTLE BODY, REMOVAL . After installation is complete, using a scan tool select the Throttle Body Self Learn.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
CHECK THE (K122) TP SENSOR 2 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the PCM C2 harness connector.
3. Ignition on, engine not running.
4. Measure the voltage on the (K122) TP Sensor 2 Signal circuit at the Throttle Body harness connector.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (K122) TP Sensor 2 Signal circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK THE (K122) TP SENSOR 2 SIGNAL CIRCUIT FOR A SHORT TO THE 5-VOLT SUPPLY CIRCUIT
1. Measure the resistance between the (K122) TP Sensor 2 Signal circuit and the 5-Volt Supply circuit at the Throttle Body harness connector.
  Is the resistance below 100 Ohms?
  
  Yes
  - Repair the short between the (K122) TP Sensor 2 Signal circuit and the 5-Volt Supply circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
CHECK THE (K922) TP SENSOR RETURN CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the (K922) TP Sensor Return circuit between the Throttle Body harness connector to the PCM C2 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 6
  No
  - Repair the open in the (K922) TP Sensor Return circuit.
  - 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 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. Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module harness 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 in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
THROTTLE FOLLOWER TEST
1. Using the scan tool, perform the ETC Throttle Follower Test.
2. Monitor the TP Sensor 2 voltage while slowly pressing the Throttle pedal down.
  Is there a smooth voltage change from approximately 4.3 Volts and decrease to approximately 0.7 of a Volt?
  
  Yes
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
  No
  - Verify that there is good pin to terminal contact in the Throttle Body and Powertrain Control Module connectors. If OK, disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assembly. Refer to THROTTLE BODY, REMOVAL . After installation is complete, using a scan tool select the Throttle Body Self Learn.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .