|
|
Content .. 1171 1172 1173 1174 ..
moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other 1. READ VALUE USING TECHSTREAM (THROTTLE POSITION SENSOR) a. Connect the Techstream to the DLC3. b. Turn the ignition switch ON and turn the Techstream ON. c. Enter the following menus: Powertrain/Engine and ECT/Data List/ETCS/Throttle Position No.1 and Throttle Position No.2. d. Check the values displayed on the Techstream. Result RESULT CHART HINT: TP#1 stands for Throttle Position No.1, and TP#2 stands for Throttle Position No.2. B : Go to step 5 A : Go to next step 2. CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM) a. Disconnect the D9 throttle body connector. b. Disconnect the D74 ECM connector. c. Measure the resistance according to the value(s) in the table below. Standard resistance (Check for open) TESTER CONNECTION SPECIFIED CONDITION Throttle Position No.1 Throttle Position No.2 Throttle Position No.1 Throttle Position No.2 Trouble Area Proceed To When Accelerator Pedal Released When Accelerator Pedal Depressed 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V VC circuit open A 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V 4.5 to 5.0 V E2 circuit open 0 to 0.2 V, or 4.5 to 5.0 V 2.1 to 3.1 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 2.1 to 3.1 V (Fail-safe) VTA1 circuit open or ground short 0.5 to 1.1 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V 0.5 to 1.1 V (Fail-safe) 0 to 0.2 V, or 4.5 to 5.0 V VTA2 circuit open or ground short 0.5 to 1.1 V 2.1 to 3.1 V 3.2 to 4.8 V (Not fail-safe) 4.5 to 5.0 V (Not fail-safe) TP sensor circuit normal B Tester Connection Condition Specified Condition D9-5 (VC) - D74-80 (VCTA) Always Below 1 ohms
2008 Toyota Tundra 2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra
|