DTC P2100, P2102, or P2103
|
|
DTC P2100, P2102, or P2103
|
DTC P2100 04
Intake Air Flow Valve Control Circuit Open
DTC P2102 02
Intake Air Flow Valve Control Circuit Short to Ground
DTC P2103 01
Intake Air Flow Valve Control Circuit Short to Battery
|
Diagnostic Fault Information
|
|
Circuit
|
Short to Ground
|
Open/High Resistance
|
Short to Voltage
|
Signal Performance
|
Control X
|
P2102 02, P2101 03
|
P2100 04, P2101 54
|
P2103 01
|
P2101 59, P2101 39, P2101 51, P2101 52
|
Control Y
|
P2102 02, P2101 03
|
P2100 04, P2101 54
|
P2103 01
|
P2101 59, P2101 39, P2101 51, P2101 52
|
|
Circuit/System Description
|
A throttle plate actuator is used to achieve high exhaust gas recirculation rates. It increases the pressure difference between exhaust and intake so that the appropriate exhaust quantity can be mixed with the intake air. The engine control module (ECM) transmits the desired angle as a PWM signal to the throttle plate actuator. The throttle plate actuator operates the DC motor to control the throttle plate based on the PWM signal from the ECM. The throttle plate position is monitored by an internal position sensor.
|
Conditions for Running the DTC
|
|
•
|
The ignition is ON or the engine is running.
|
|
•
|
The throttle actuator motor is commanded ON or OFF.
|
|
•
|
The ignition voltage is less than 16 V.
|
|
•
|
The DTCs run continuously when the above conditions are met.
|
|
Conditions for Setting the DTC
|
The ECM detects an open, short to ground, or a short to voltage on the throttle actuator control circuit for greater than 1 s.
|
Action Taken When the DTC Sets
|
DTCs P2100, P2102 and P2103 are Type A DTCs.
|
Conditions for Clearing the DTC
|
DTCs P2100, P2102 and P2103 are Type A DTCs.
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References
|
Circuit/System Verification
|
|
1.
|
Ignition ON, command the Q38 Throttle Body ON and OFF with a scan tool. The throttle plate should respond to the scan tool commands.
|
|
2.
|
Read the DTC information from the scan tool. DTC P2100, P2101, P2102 or P2103 should not be shown.
|
|
3.
|
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
|
|
1.
|
Ignition OFF, disconnect the harness connector at Q38 throttle body.
|
|
2.
|
Ignition ON, connect a test lamp between control circuit terminal 2 and ground. The test lamp should illuminate.
|
|
3.
|
If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the K20 Engine Control Module.
|
|
4.
|
Ignition ON, connect a test lamp between control circuit terminal 6 and ground. The test lamp should illuminate.
|
|
5.
|
If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the K20 Engine Control Module.
|
|
6.
|
Ignition OFF, disconnect the harness connector X1 at the K20 Engine Control Module.
|
|
7.
|
Ignition ON, connect a test lamp between control circuit terminal 6 and ground. The test lamp should not illuminate.
|
|
8.
|
If the test lamp illuminate, test the control circuit for a short to voltage. If the circuits test normal, replace the K20 Engine Control Module.
|
|
9.
|
Ignition ON, connect a test lamp between the control circuit terminal 2 and ground. The test lamp should not illuminate.
|
|
10.
|
If the test lamp illuminate, test the control circuit for a short to voltage. If the circuits test normal, replace the K20 Engine Control Module.
|
|
11.
|
If all circuits test normal, replace the Q38 throttle body assembly.
|
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
