Opel Frontera UBS. Manual - part 139

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–8

Functions of Indicator Lamp

TOD Indicator Lamps

C07RW045

Indication During Transition of Transfer Lever
When the transfer lever is shifted, and the signals from
the AXLE switch do not comply with the signal conditions
of the 4H and 4L switch, the transfer lever position signals
generated by the 4H and 4L switch and the N position
signals are repeatedly output at an interval of 0.8 second.

NOTE: After the transfer lever is set to the specified
position and the AXLE switch generates compliant
signals, the normal output status is returned.

4B2–9

DRIVE LINE CONTROL SYSTEM (TOD)

C07RW061

Bulb Check
When the starter switch is turned on, the TOD indicator
lamps go on as shown below.

NOTE: Once the starter switch is turned on, all the TOD
indicator lamps are lit for two seconds even if the transfer
lever is in any position.

C07RW016

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–10

Simplified checking method of ABS IN and BRAKE ON signals:
In the event that any of the signal inputs listed below are
observed while the self-diagnostic code is being
displayed (the self-diagnostic connector is short-circuited
to GND), you can simply check the ABS IN and BRAKE
ON signals as shown in the figures below.

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Check Lamp

Check Lamp Valve Check
When the starter switch is turned on in the normal state,
the control unit turns on the CHECK lamp to check the
bulb.

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4B2–11

DRIVE LINE CONTROL SYSTEM (TOD)

The CHECK lamp also has the following functions.

D-G MAP recognition and display (The control unit
displays what type of vehicle, diesel or gasoline
vehicle, it recognizes.)

1. Short-circuit the self-diagnostic connector.
2. Turn on the starter switch. (Displays with respect to

the self-diagnosis begin to appear.)

NOTE: Do not start the engine.

3. Shift the transfer lever to the neutral position between

HIGH and 4L.

4. After all the conditions in 1 through 3 above are met,

set the throttle to the WOT (wide open throttle)
position (i.e., full open position).  The display of the
self-diagnosis is temporarily suspended, and the
CHECK lamp begins to display that MAP is
recognized by the TPS (throttle position sensor)
according to the current conditions.

NOTE: If the TPS has failed, this function might not work.

1. When the control unit recognizes the vehicle as

gasoline type, the CHECK lamp is turned on for five
seconds and this mode is repeated at an interval of
0.3 second.

2. When the control unit recognizes the vehicle as

diesel type, the CHECK lamp is turned off for five
seconds and this mode is repeated at an interval of
0.3 seconds.

3. Upon completion of step 4, the system resumes the

self-diagnosis.  (The self-diagnosis is executed
from the beginning.)

5. Turn off the starter switch once.  When above

conditions are met again in the future, the TPS MAP
control can be started.

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