Overview:Fault Code 42 indicates the transmission is unable to complete a shift across the Splitter. The Splitter is either stuck in HI or LO, or cannot complete engagement into HI or LO. Detection:The transmission attempts the same splitter shift 5 consecutive times and determines the shift cannot be completed based on the speeds across the back box. Fallback:This fault causes a 9-speed fallback and the transmission stays in either LO split or HI split. Possible Causes:1) Low air pressure2) Contaminated air supply3) Air leak4) Splitter valve5) Splitter Actuator, Cylinder, Piston or Yoke Shop Talk:Operate vehicle and perform several range up...

Overview:Fault Code 42 indicates the transmission is unable to complete a shift across the Splitter. The Splitter is either stuck in HI or LO, or cannot complete engagement into HI or LO. Detection:The transmission attempts the same splitter shift 5 consecutive times and determines the shift cannot be completed based on the speeds across the back box. Fallback:This fault causes a 9-speed fallback and the transmission stays in either LO split or HI split. Possible Causes:1) Low air pressure2) Contaminated air supply3) Air leak4) Splitter valve5) Splitter Actuator, Cylinder, Piston or Yoke Shop Talk:Operate vehicle and perform several range up...

Overview:Fault Code 43 indicates an electrical failure of the solenoids that control the range shift. Detection:Starting at key on and throughout operation, the Transmission Controller constantly measures this Range Valve circuit. A failure of short to battery, short to ground or open circuit is detected. Fallback:This fault causes a 5-speed fallback and the transmission stays in either low range or high range. When the vehicle comes to a stop, an attempt to shift into low range is made. Possible Causes:1) Range Valve2) Transmission Harness3) Transmission Controller Shop Talk:Key on. If the fault is present, the system should automatically detect the...

Overview:Fault Code 43 indicates an electrical failure of the solenoids that control the range shift. Detection:Starting at key on and throughout operation, the Transmission Controller constantly measures this Range Valve circuit. A failure of short to battery, short to ground or open circuit is detected. Fallback:This fault causes a 5-speed fallback and the transmission stays in either low range or high range. When the vehicle comes to a stop, an attempt to shift into low range is made. Possible Causes:1) Range Valve2) Transmission Harness3) Transmission Controller Shop Talk:Key on. If the fault is present, the system should automatically detect the...

Overview:Fault Code 43 indicates an electrical failure of the solenoids that control the range shift. Detection:Starting at key on and throughout operation, the Transmission Controller constantly measures this Range Valve circuit. A failure of short to battery, short to ground or open circuit is detected. Fallback:This fault causes a 5-speed fallback and the transmission stays in either low range or high range. When the vehicle comes to a stop, an attempt to shift into low range is made. Possible Causes:1) Range Valve2) Transmission Harness3) Transmission Controller Shop Talk:Key on. If the fault is present, the system should automatically detect the...