DISASSEMBLY PROCEDURE 1. REMOVE SHIFT SOLENOID VALVE SL2  (a) Remove the bolt, lock plate and 2 straight pins. (b) Remove the shift solenoid valve. 2. REMOVE SHIFT SOLENOID VALVE SLU  3. REMOVE SHIFT SOLENOID VALVE SLT  (a) Remove the bolt, lock plate and 2 straight pins. (b) Remove the shift solenoid valve. 4. REMOVE SHIFT SOLENOID VALVE SL1  5. REMOVE SHIFT SOLENOID VALVE SR
6. REMOVE SHIFT SOLENOID VALVE S1  (a) Remove the bolt, valve body wire harness clamp and shift solenoid valve. 7. REMOVE SHIFT SOLENOID VALVE S4  (a) Remove the bolt and shift solenoid valve. 8. REMOVE SHIFT SOLENOID VALVE S2  9. REMOVE SHIFT SOLENOID VALVE S3  (a) Remove the bolt and shift solenoid valve. |
Toyota Tundra Service Manual > Sfi System: Brake Switch "A" / "B" Correlation (P0504)
DESCRIPTION The stop light switch is a duplex system that transmits two signals: STP and ST1-. These two signals are used by the ECM to monitor whether or not the brake system is working properly. If the signals, which indicate the brake pedal is being depressed and released, are detected simultaneo ...
