Opel Frontera UBS. Manual - part 2543

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–35

DTC P0717 (FLASHING CODE 14) INPUT REVOLUTION SENSOR FAILURE (NC0)

DTCP0717

7A–36

AUTOMATIC TRANSMISSION (AW30-40LE)

DTC P0722 (FLASHING CODE 11) OUTPUT REVOLUTION SENSOR FAILURE (SP2)

D07RY00018

Circuit description:
Vehicle speed information is provided to the TCM by the
output revolution sensor. This sensor is located in the
transmission adapter housing. The output revolution
sensor is an electromagnetic pulse pickup type that
generates a speed signal according to the revolution of
the transmission output shaft. As a result, the sensor
sends a sine wave signal (AC) to the TCM, which
converts this sine wave signal (pulse voltage) to a km/h
signal.

Fail-safe control:
The TCM controls fail-safe by detecting output revolution
sensor failure.

Failure detection:

• When not even 1 pulse is input in the output

revolution sensor during the time 4 pulses are input
in the speed meter sensor.

• When the failure criteria is continuously 500 times

from the time ignition is turned ON until it is turned
OFF.

• Detection inhibit condition:

When speed meter sensor revolution is less than 80
rpm.

Contents of control:
At failure detection

• Uses the vehicle speed calculated by speed meter

sensor for shift control

• Keeps the condition of transfer (High/Low judgment)

just before detection until vehicle speed is 0km/h,
and changes shift map to L4 map (3

→

4UP None) at

vehicle speed 0km/h.

• Use high oil temperature map according to shift map

priority at correct oil temperature control.

• Squat control inhibit

• Up hill and down hill control inhibit

• Reverse lockout control inhibit

• Stores the failure information in failure-memory

At failure decision

Executes following items in addition to above control
items at failure detection.

•Blinks "CHECK TRANS" lamp

Conditions of turning "CHECK TRANS" off: 

Turns "CHECK TRANS" lamp off when judged 0km/h by
speed meter sensor after more than 1 pulse input in the
output revolution sensor and finished vehicle speed
calculation during the time 4 pulse are input in the speed
meter sensor.

Reversion conditions from fail-safe:

Recovers at the same time as the conditions of turning
“CHECK TRANS” lamp off are satisfied.

Test description:

The following numbers correspond to circled numbers on
the diagnostic chart.

(1) When the vehicle is running, a speed signal is input

from the output revolution sensor to the TCM.

(2) At this test, the continuity of circuit wiring and the

output revolution sensor is checked.

(3) At this test, the continuity of the output revolution

sensor is checked.

Diagnostic aids:
An intermittent may be caused by a poor connection,
rubbed through wire insulation or a wire broken inside
the insulation. Inspect related harness connector for
backed out terminals, improper mating, broken locks,
improperly formed or damaged terminals, poor terminal
to wire connection and damaged harness.

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–37

DTC P0722 (FLASHING CODE 11) OUTPUT REVOLUTION SENSOR FAILURE (SP2)

DTCP0722

7A–38

AUTOMATIC TRANSMISSION (AW30-40LE)

DTC P0727 (FLASHING CODE 13) ENGINE REVOLUTION SIGNAL FAILURE (NE)

D07RY00019

Circuit description:
Engine revolution (rpm) signals are sent from Engine
Control Module (ECM) to the Transmission Control
Module (TCM).
The engine speed sensor is an electromagnetic pulse
pickup type that generates signals when the flywheel
gear revolves (2 pulses at a single revolution of the
flywheel gear).
The TCM converts these sine wave signals into engine
revolution (RPM) signals.

Fail-safe control:
The TCM controls fail-safe by detecting engine revolution
sensor failure.

Failure detection:

• When input revolution is more than 2000 rpm

• When not even 1 pulse is input in the engine

revolution signal during 5 seconds

• Detection inhibit condition: At 4th gear

Contents of control:
At failure detection

• Up hill and down hill control inhibit

• Oil temperature sensor failure detection inhibit

• Blinks "CHECK TRANS" lamp

• Stores the failure information in failure memory.

At failure decision

Same as failure detection

Conditions of turning "CHECK TRANS" lamp off: 
Turns "CHECK TRANS" lamp off when judged 0km/h by
speed meter sensor after the engine revolution signal
pulses are input 250 pulses normally.
(however, uses 0 km/h judgment by back-up vehicle
speed at output revolution failure)

Reversion conditions from fail-safe: 
Recovers at the same time as the conditions of turning
“CHECK TRANS” lamp off are satisfied.

Test description:

The following numbers correspond to circled numbers on
the diagnostic chart.

(1) Engine revolution signals are input from the ECM into

the TCM.

(2) When the engine idling, voltage fluctuates with (AC

intermittent) range of less than 1.4V 

⇔ 

9 

∼

 16V.

Diagnostic aids:
An intermittent may be caused by a poor connection,
rubbed through wire insulation or a wire broken inside
the insulation. Inspect related harness connector for
backed out terminals, improper mating, broken locks,
improperly formed or damaged terminals, poor terminal
to wire connection and damaged harness.