Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
- CHECK TO SEE IF DTC P0890 IS PRESENT
- (T9) OD PRESSURE SWITCH Sensor CIRCUIT SHORT TO VOLTAGE
- Turn the ignition off to the lock position.
- Disconnect the PCM C4 harness connector.
- Disconnect the Transmission Solenoid/Pressure Switch Assembly harness connector.
- Ignition on, engine not running.
- With the scan tool under TIPM, actuate the Transmission.CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install PCM Pinout Box 8815 to perform diagnosis.
- Measure the voltage of the (T9) OD Pressure Switch Sensor circuit.
Is the voltage above 0.5 volt?
Yes
- Repair the (T9) OD Pressure Switch Sensor circuit for a short to voltage.
- Perform 42RLE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
No
- Go to step 3
- (T47) 2/4 PRESSURE SWITCH Sensor CIRCUIT SHORT TO VOLTAGE
- With the scan tool under TIPM, actuate the Transmission.
- Measure the voltage of the (T47) 2/4 Pressure Switch Sensor circuit.
Is the voltage above 0.5 volt?
Yes
- Repair the (T47) 2/4 Pressure Switch Sensor circuit for a short to voltage.
- Perform 42RLE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
No
- Go to step 4
- (T50) L/R PRESSURE SWITCH Sensor CIRCUIT SHORT TO VOLTAGE
- With the scan tool under TIPM, actuate the Transmission.
- Measure the voltage of the (T50) L/R Pressure Switch Sensor circuit.
Is the voltage above 0.5 volts?
Yes
- Repair the (T50) L/R Pressure Switch Sensor circuit for a short to voltage.
- Perform 42RLE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
No
- Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the PCM per the Service Information. With the scan tool, perform QUICK LEARN
- Perform 42RLE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
- INTERMITTENT WIRING AND CONNECTORS
- The conditions necessary to set the DTC are not present at this time.
- Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
- Wiggle the wiring and connectors while checking for shorted and open circuits.
- With the scan tool, check the DTC EVENT DATA to help identify the conditions in which the DTC was set.
Were there any problems found?
Yes
- Repair as necessary.
- Perform 42RLE TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure
No
- Test Complete.