Cruze

DTC P2102 or P2103

A throttle plate actuator is used to achieve high exhaust gas recirculation rates. It increases the pressure difference between exhaust and inlet so that the appropriate exhaust quantity can be mixed with the inlet 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.

The ECM detects an open, short to ground, or a short to voltage on the throttle actuator control circuit for greater than 1 s.

DTC P2102 and P2103 are Type A DTCs.

DTC 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 for scan tool information

1. Ignition ON, command the Q38 Throttle Body ON and OFF with a scan tool. The throttle blade should respond to the scan tool commands.
2. Observe the scan tool DTC information parameter. DTC P2102 or P2103 should not set.
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 the Q38 Throttle Body.
2. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 4 and ground.

⇒	If the test lamp is OFF, test the ignition circuit for a short to ground or an open/high resistance.

3. Ignition ON, test for less than 0.3 V between control circuit terminal 2 and ground.

⇒	If greater than specified value, test for the control circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.

4. Ignition OFF, test for greater than 500 kΩ between control circuit terminal 2 and ground.

⇒	If less than the specified value, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

5. Ignition ON, test for greater than 11 V between terminal 2 and battery voltage B+.

⇒	If less than specified value, test for an open circuit. If the circuit tests normal, replace the K20 Engine Control Module.

6. If all circuits test normal, test or replace the Q38 Throttle Body.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.