DTC P0748: Pressure Control Solenoid "A" Electrical (Shift Solenoid Valve SL1): 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.
- INSPECT TRANSMISSION WIRE (SL1)
- Remove the TCM from the transaxle.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Tester Connection Specified Condition
20°C (68°F)14 (SL1+) - 13 (SL1-) 5.0 to 5.6 Ω - Measure the resistance according to the value(s) in the table below.
Standard resistance
Check for short
Tester Connection Specified Condition 14 (SL1+) - Body ground 10 kΩ or higher 13 (SL1-) - Body ground 10 kΩ or higher
OK → REPLACE TCM
NG: Go to next step
- INSPECT SHIFT SOLENOID VALVE SL1
- Remove the shift solenoid valve SL1.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
Tester Connection Specified Condition
20°C (68°F)1 - 2 5.0 to 5.6 Ω - Connect a positive (+) lead through a 21 W bulb to terminal 2 and a negative (-) lead to terminal 1 of the solenoid valve connector, then check the movement of the valve.
OK
The solenoid makes an operating sound.
NG → REPLACE SHIFT SOLENOID VALVE SL1
OK → REPLACE TRANSMISSION WIRE