文 件
P2766 Primary pulley speed unplausible
Reaction from TCU:
High side* off,Warning lamp
Man actions:
1、check with the tester tool if other speed information (engine speed, output
speed, vehicle speed) is also missing; if so, fix that problem first and check if
this FC still occurs
2、check with the tester tool the n_s1 signal if the clutch is closed and
compare with engine speed (difference should be smaller than 200 rpm) - do
this for the whole range of engine speeds (up till 6000 rpm)
3、check wire harness
4、exhange the TCU to make sure
5、check sensor position, angle; same with trigger wheel; check if there's no
object in front of the sensor (piece of the belt, or…)
6、replace primary speed sensor
7、replace transmission cable harness
8、replace vehicle cable harness
9、if still has problem, please inform of the Punch in time.
P0721 Secondary pulley speed unplausible
Reaction from TCU:
High side* off,Warning lamp
Man actions:
1、check with the tester tool if other speed information (engine speed, pulley 1
speed, vehicle speed) is also missing; if so, fix that problem first and check if
this FC still occurs
2、check with the tester tool the signal (vehicle speed based on n_ab) and
compare with vehicle speed (difference should be smaller than 5 kph) -
3、check the vehicle tyre, whether use spare tyre or another type of tyre or
not?if yes, please replace original tyre.
4、check wire harness
5、exhange the TCU to make sure
6、check sensor position, angle; same with trigger wheel; check if there's no
object in front of the sensor (piece of the belt, or…)
7、replace primary speed sensor
8、replace transmission cable harness
9、replace vehicle cable harness
10、if still has problem, please inform of the Punch in time.
P0944 Insufficient clamping force (VSM)
Reaction from TCU:
Warning lamp, Clutch open
Man actions:
The torque of the engine is too big at the moment the faultcode was activated.
The ECU does not follow the torque reduction request from TCU.