Electrical
What is the first thing you should test when experiencing an electrical issue?
The Battery
This transmission is in our NA platforms
TR580
The TCM uses whatbother sensor for temperature sensor rationality
ECT sensor
The TCM controls what side of the solenoid circuit?
The power side/High side
A blinking A/T oil temperature light indicates what?
A DTC in the Transmission
What is the Next item(s) to check after verifying the power source?
Powers and Grounds
This unit is installed on our boosted applications
TR690
The turbine speed sensor on a TR580 is used to measure the speed of the input shaft. where is it located?
Front left side of the transmission
This type of solenoid provides zero pressure to a component when off.
Group 1/normally vented solenoids
If the forward & Reverse solenoid fails what gear will be selected when selector is put into reverse?
Reverse
The engine load PID is provided to the TCM via?
Comms/Bussed in.
This CVT has the pulleys being driven while in Park.
TR690
The TCM receives power from?
Main Relay
This type of solenoid provides max pressure to a component when off.
Group 2/ normally applied
A CVT comes in with a complaint of slipping while in gear. A pressure gauge on the secondary side indicates a reading of 100 PSI when shifting from park to drive. What could be the cause?
Secondary pressure is too low.
The TCM receives ground from what to components?
Valvebody bolt and the transmission case
Where is the TCM located on a 2018 Forester XT
Under the dash to the left of accelorator pedal.
If the battery voltage is not present at the speed sensors which one of these could be the cause?
MB fuse # - 21
This solenoid is inlike the rest in the valvlebody. It is not a vaiarable applied type. Only on/off
Oil pressure solenoid.
A technician is performing a fluid replacement on a CVT. The fluid is found to be thick and varnished. What would be the likely cause?
Burnt clutches
What is the maximum allowable voltage drop when testing the power or ground side of a circuit?
0.2v
How many planetary gearsets does a TR580 have?
1
Where is the turbine speed measured on the TR690?
It is calculated from the primary speed sensor and engine RPM.
The name for a device that is controlled on the power side of a circuit.
High side driver
In cold weather a customer complains their transmission doesnt upshift in the morning. This could be caused by?
Normal operation