Ignition voltage is supplied directly to the skip shift solenoid. The engine control module (ECM) controls the skip shift solenoid by grounding the control circuit via an internal switch called a low side driver. The low side driver has a fault line which monitors the control circuit. When the ECM commands the skip shift solenoid ON, the voltage on the control circuit should be low, near 0 volts. When the ECM commands the control circuit to the skip shift solenoid OFF, the voltage should be high, near battery voltage.

The engine is running.

P0803 is a Type B DTC.

P0803 is a Type B DTC.

The battery must be fully charged and pass a battery test. Refer to Battery Inspection/Test.

Schematic Reference

Manual Transmission Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Manual Transmission Description and Operation

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Engine Control Module Scan Tool Information

1. Ignition ON, command the skip shift solenoid ON and OFF, with a scan tool, while observing the following skip shift circuit status parameters.

•	Skip shift solenoid control Ckt. Short Gnd Test Status

•	Skip shift solenoid control Ckt. Open Test Status

•	Skip shift solenoid control Ckt. Short Volts Test Status

⇒	Each parameter should toggle between OK and Not Run or Not Run and OK.

2. 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.

Important: You must perform the Circuit/System Verification first.

1. Disconnect the skip shift solenoid harness connector.
2. Ignition ON, verify that a test lamp illuminates between the voltage circuit terminal B and ground.

⇒	If the test lamp does not illuminate, test the voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the circuit fuse is open, replace the skip shift solenoid.

3. Verify that a test lamp does not illuminate between the voltage circuit terminal B and the control circuit terminal A.

⇒	If the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the ECM.

4. Remove the test lamp.
5. Command the skip shift solenoid ON with a scan tool. Verify with a scan tool that the skip shift solenoid Ckt. Short Volts Test Status parameter is OK.

⇒	If not the specified value, test the control circuit for a short to voltage. If the circuit tests normal, replace the ECM.

6. Install a 3A fused jumper wire between the skip shift control circuit terminal A and the voltage circuit terminal B. Command the skip shift solenoid ON with a scan tool. Verify with a scan tool that the affected skip shift solenoid Ckt. Short Volts Test Status parameter is displaying Fault.

⇒	If not the specified value, test the control circuit for an open/high resistance. If the circuit tests normal, replace the ECM.

7. If all the circuits test normal, replace the skip shift assembly.

1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming, or setup procedures that are required when a component or module is removed or replaced.
3. Clear the DTCs.
4. Turn OFF the ignition for 60 seconds.
5. Engine running, command skip shift solenoid ON and OFF with a scan tool, while observing the skip shift circuit status parameters. The circuit status parameters should change from OK to Not Run or Not Run to OK.

⇒	If another DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle and perform the appropriate diagnostic procedure.