Throttle position sensor test
The throttle position sensor is a variable resistor that rotates with the throttle shaft and provides information from which the ECM determines when the throttle is closed, wide open, or in between positions.
The sensor is rigidly connected to the throttle shaft. Depending on the position of the throttle valve, the resistance of the sensor changes.
Checking the oil temperature sensor
1. Remove the oil temperature sensor.
2. Measure the resistance between the terminals «1» And «2» oil temperature sensor connector. Resistance: 16.7-20.5 kΩ at 0°C, 0.57-0.69 kΩ at 100°C.
Checking the vehicle speed sensor
1. Remove the vehicle speed sensor and connect a 3-10 kΩ resistor as shown.
2. Turn the vehicle speed sensor shaft and check that there is voltage between the terminals «2» And «3» (1 revolution = 4 pulses).
A/T Control Relay Test
1. Remove the A/T control relay.
2. Jumper the terminal «2» relay A/T control with negative (–) battery terminal and terminal «4» positive control relay () battery terminal.
3. Check the continuity between the terminal «1» and terminal «3» A/T control relay when jumpers are connected and disconnected from the battery.
- When connecting jumpers between the relay terminals, there must be conductivity.
- When disconnecting the jumpers between the relay terminals, there should be no conduction.
4. If test results are negative, replace the relay.
Solenoid valve test
1. Remove the valve body cover.
2. Disconnect connectors from each solenoid valve.
3. Measure the resistance between the terminals «1» And «2» each solenoid valve.
Resistance:
- Shock Clutch Solenoid Valve: 2.7-3.4 ohms at 20°C
- Low and reverse solenoid valve: 2.7-3.4 ohms at 20°C
- 2nd gear solenoid valve: 2.7-3.4 ohms at 20°C
- Downshift solenoid valve: 2.7-3.4 ohms at 20°C
- Overdrive solenoid valve: 2.7-3.4 ohms at 20°C
4. If the valve resistance is different, replace the solenoid valve.
Attention! Check the resistance of the solenoid valves by connecting an ohmmeter to the connector pins.
Contacts | Purpose | Resistance |
7 and 10 | shock absorber clutch valve | 2.7-3.4 ohms at 20°C |
10 and 6 | Low and Reverse Valve | |
9 and 4 | Second gear valve | |
9 and 3 | Downshift valve | |
9 and 5 | overdrive valve |