The Output Speed Sensor outputs pulse-signals according to the revolutions of the output shaft of the transmission. The Output Speed Sensor is installed inside transmission. This value, together with the throttle position data, is mainly used to decide the optimum gear position.
The TCM sets this code if the calculated value of the pulse-signal is noticeably different from the value calculated, using the Wheel Speed Sensor output.(MIL ON : 2 driving Cycle)
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Check signal range |
•
Faulty in Mechatronics (Valve-body + TCM) | |
Enable Conditions | CASE1 |
•
Sensor supply power : normal
•
No electrical error in sensor | |
CASE2 |
•
Transmission condition = friction locked
•
Input speed sensor : normal
•
ㅣInput speed/ gear ratio - output speed|≥200rpm | ||
CASE3 |
•
Transmission condition = friction locked
•
Not shifting to "D" or "R"
•
Power supply, Input speed sensor, Wheel speed sensor : normal | ||
Threshold Value | CASE1 |
•
Siganl value > 10000 rpm | |
CASE2 |
•
Difference with last speed and real speed > -1000rpm | ||
CASE3 |
•
Difference with Wheel speed sensor > 500rpm
•
Difference with Input speed sensor > 200rpm | ||
Diagnostic Time |
•
1second | ||
Fail Safe |
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Using Wheel speed
•
No learning control
•
Keep the present gear
•
Fixed at 3rd gear (In case of CASE2 : possible to normal shifting) (priority : 3) | ||
The function with the higher priority will aiways take precedence. However, a low-priority is not overruled by a higher priority function.
Functions from different priority categories can also run in parallel. It is important to note which function will take precedence in this case.
In such an event it is possible for a substitute function with low priority not be carried out if a second, higher-priority function is present. This has been taken into account when compiling the priority list and is international.
The mechanical emergency run function must always have the highest priority, since from the electrical standpoint it is the only safe condition.
Fig 1) Output speed sensor
