DTC P0989: Transmission Fluid Pressure Sensor / Switch "E" Circuit Low; DTC P0990: Transmission Fluid Pressure Sensor / Switch "E" Circuit High: Procedure
WARNING: This page is about a different car, the 2010 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0989 OR P0990)
- Connect Techstream to the DLC3.
- Start the ignition and turn Techstream on.
- Enter the following items: "Powertrain / ECT / Trouble Codes".
- Read the DTCs using the Techstream.
Result
Display (DTC output) Proceed to Only "P0990" is output A Only "P0989" is output B "P0989 or P0990" and other DTCs C HINT:
If a solenoid is stuck OFF, DTCs for several solenoids including the malfunctioning solenoid will be detected.
C → GO TO DTC CHART
B → See step 4
A: Go to next step
- CHECK TRANSMISSION WIRE (SHORT TO GROUND)
- Remove the TCM.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Tester Condition Specified Condition 19 (TPS3) - Body ground (Valve body assembly) 10 kΩ or higher
OK → REPLACE TCM
NG: Go to next step
- CHECK ATF TEMPERATURE SENSOR ASSEMBLY (ATF PRESSURE SWITCH NO. 3)
- Disconnect the connector from the ATF temperature sensor assembly.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Tester Condition Specified Condition 1 (TPS3) - Body ground (Valve body assembly) 10 kΩ or higher
NG → REPLACE ATF TEMPERATURE SENSOR ASSEMBLY
OK → REPLACE TRANSMISSION WIRE
- CHECK TRANSMISSION WIRE
- Remove the TCM.
- Disconnect the connector from the ATF temperature sensor assembly.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Tester Condition Specified Condition 19 (TPS3) - 1 (TPS3) Below 1 Ω 19 (TPS3) or 1 (TPS3) - Body ground (Valve body assembly) 10 kΩ or higher
NG → REPLACE TRANSMISSION WIRE
OK → REPLACE ATF TEMPERATURE SENSOR ASSEMBLY