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Technical Description- The transmission solenoid has noted an issue with the 4wd solenoid circuit. On the Dyna VT transmission the solenoid is mounted on the rear right side just behind the right trumpet housing. There is a large metal cover with a row of solenoids behind. The 4wd solenoid is the 4th from the top. The solenoid coil resistance should be around 7.5 ohms. The solenoid is supplied from transmission module large connector Pin 89, 12 volt supply. The solenoid earth is to the chassis. Check the solenoid resistance and the wiring. The 4wd solenoid is supplied with voltage to turn off the 4wd. If the foot brakes are pressed or the brake pedal switches are faulty then the 4wd will be engaged and no voltage will be sent to the solenoid.
Technical Description- The transmission module 1 has noted a problem with the speed sensor values. The module compares the transmission output speed sensor and the intermediate speed sensor values. It knows the engine speed and which gear is engaged so it can then calculate what the transmission output speed should be. This code is active is the output speed does not match the expected speed. Could be a speed sensor issue or if the transmission thinks it is in a different range to the actual range it is in. The intermediate speed sensor is mounted on the left side of the transmission. It is behind the steps and fuel tank, low down in the side of the trans housing. The output speed sensor is mounted in the top of the rear axle and takes its reading from the crown wheel. Sensors are hall type sensors so you can’t test resistance. Remove the sensors and check the sensor has not been damaged. Sensors are supplied with 10 volts from transmission module Pin E4. Sensor earth is transmission module Pin C4. The intermediate speed sensor signal is to trans module Pin D4. The theoretical speed sensor signal is to trans module Pin D2. This code could also be active if a gear is not fully selected, Creeper is not engaged or there is slippage in the transmission clutches.
