Opel Frontera UBS. Manual - part 1966

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.

C04RW010

If the accelerator wide–open–throttle(WOT) timing check
lamp is on, the subsequent timing will display immediately
after the WOT timing check lamp turns off. If the WOT
timing check lamp is off, the subsequent lamp timing will
display immediately.

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–12

C04RY00011

If the WOT timing check lamp is off, the subsequent
timing will display immediately after the WOT timing
check lamp turns on.
If the WOT timing check lamp is on, the subsequent lamp
timing will display immediately.

4B2–13

DRIVE LINE CONTROL SYSTEM (TOD)

Diagnosis

General Information Diagnosis

The troubles on TOD are classified into the group that can
be identified by the lighting status of the TOD indicator
lamps and those that can be recognized as abnormal
phenomena of the vehicle by the driver.
The troubles that can be identified by the lighting status of
the TOD indicator lamps are examined by the procedures
“Diagnosis from Trouble Codes” and “Trouble Diagnosis
Depending on The Status of TOD indicator”.  The troubles
that can be recognized as abnormal phenomena of the
vehicle by the driver are examined by the procedure
“Diagnosis from symptom”.

Self-diagnosis

The control unit has a function of self-diagnosis.  If a
trouble occurs in the course of system startup, the control
unit blinks the CHECK lamp and saves the trouble code.

C07RW021

NOTE: If an intermittent fault occurs, the control unit
stops blinking upon removal of the fault.  The trouble code
is saved to the control unit.

DRIVE LINE CONTROL SYSTEM (TOD)

4B2–14

Indication Method of Trouble Code

D

Short-circuit terminal 8 of the self-diagnostic
connector to GND to display the trouble code on the
CHECK lamp.

810RW308

D

If no trouble codes exist, code “12” is displayed
continuously.

D

If trouble codes exist, code “12” is displayed three
times, and the trouble codes, starting from the smaller
code number, are displayed three times respectively.

C07RW013