A/T - 096/097 General Information
TECHNICAL BULLETIN # 195DATE: Nov 93
TRANSMISSION: 096 & 097
SUBJECT: General Information
APPLICATION: Volkswagen/Audi
VW 096 & 097
The VW 096/097 is a front wheel drive, four speed overdrive unit capable of either hydraulic or mechanical drive through the torque convertor. All transaxle functions are controlled by an on-board transaxle computer sending signals to seven solenoids on the transaxle valve body. This unit has five clutch packs, one roller clutch, and a Ford AOD style torque converter with a damper plate and direct drive shaft.
The chart shows which components are used for each gear.
Note
(1) In third hydraulic (H) gear, K-1 and K-2 are applied, locking both sun gears in the unit together. This achieves an internal transmission one to one ratio, but K-1 and K-2 are being driven by the converter turbine resulting in engine to transmission slip. In third mechanical (M) gear, K-3 directly connects the converter damper (cover) to the planet carrier. K-1 and K-2 still lock both sun gears together. The sun gears can't rotate independently. This locks the sun gears and the planet together. The planet is being driven one to one with the engine through K-3, so the whole unit spins at engine RPM, resulting in no converter slip.
Note
(2) K-1 and K-2 Must fully release.
ELECTRONIC CONTROLS
Since almost all transmission function is controlled electrically, it is important to know which solenoid does what to aid in your diagnosis. Solenoids 1, 2 3 and 4 are the primary shifting solenoids. Solenoid 5 controls how quickly the B-1 (low-reverse) clutch applies under certain conditions. Solenoid 7 controls valve movement sequence during the 2-3 and 3-4 shifts under certain conditions. Solenoid 6 controls line pressure.
The solenoid operations chart shows which solenoids are used to get through the gears.
VALVE BODY AND CONNECTOR ELECTRICAL CONFIGURATION
FAIL-SAFE MODE
If power is removed from the solenoid body for any reason, these are the gears available to you.
OPERATING VOLTAGE AND RESISTANCE CHECKS
Solenoids 1 through 5, and solenoid 7 should be 55 to 65 Ohms.
Solenoid 6 should be 4.5 to 6.5 Ohms
Battery voltage must be present at Pin 1 at all times, key on.
Battery voltage must be present at Pins 3, 4, 5, 6, 7, & 10, key on shifter in 1, harness hooked up.
Solenoid 6 is the EPC solenoid for main line Observed voltage between Pin 2(+) and Pin 8(-) must be 4.5 to 5.0 volts at hot idle, progressively and proportionately dropping to 0.5 to 1.0 volts at WOT.
Temp Sensor - Check resistance (harness unplugged) between Pin 1 and Pin 12.
68°F = approx. 240 k Ohms
140°F = approx. 49 k Ohms
216°F = approx. 7.4 k Ohms
Output speed sensor (over transfer gear) resistance measures approximately 800 Ohms.
FLUID
Transmission uses ATF.
Differential uses 75w-90 gear lube. Speedo driven gear adapter has "ADD" and "FULL" marks on it for differential level.
CHECKBALLS
The illustrations show checkball locations. Make certain that the correct size ball goes in each location, that the seats are in place and that the checkball springs are installed properly.