ECU OPEL FRONTERA 1998 Workshop Manual

7A1–64
TRANSMISSION CONTROL SYSTEM (4L30–E)
DTC P1792 EEPROM Transmission
Side Bad Check Sum
Circuit Description
Transmission Side Read Only Memory (ROM) and
Electronically Erasable Programmable Read Only
Memory (EEPROM) is an electronic circuit that controls
the transmission control in the Powertrain Control Module
(PCM).
This DTC detects a check sum error. This is a type “C”
DTC.
Conditions For Setting The DTC
Detects check sum error for 1 second.
Action Taken When The DTC Sets
Maximum line pressure.
Immediate landing to 4th gear.
Inhibit TCC engagement.
The PCM will illuminate the CHECK TRANS Lamp.
Conditions For Clearing The MIL/DTC
The PCM will turn off the CHECK TRANS Lamp after
three consecutive ignition cycles without a failure
reported.
The DTC can be cleared from the PCM history by
using a scan tool.
The DTC will be cleared from history when the vehicle
has achieved 40 warmup cycles without a failure
reported.
The PCM will cancel the DTC default actions when
the fault no longer exists and the ignition is cycled “off”
long enough to power down the PCM.
DTC P1792 EEPROM Transmission Side Check Bad Check Sum
StepActionYe sNo
11. Install the scan tool.
2. With the engine “off”, turn the ignition switch “on”.
NOTE: Before clearing DTC(s), use the scan tool to record “Failure
Records” for reference, as data will be lost when the “Clear Info”
function is used.
3. Record the DTC “Failure Records”.
Was DTC P1790 set?
Go to Step 4Go to Step 2
2Was DTC P1792 set?Go to Step 3—
31. Remove the PCM. Refer to Powertrain Control Module (PCM)
in Automatic Transmission (4L30–E) section.
2. Using the ITCS, make a reprogramming the transmission
EEPROM.
Was the reprogramming complete?
Go to Step 5—
4Replace the PCM.
Is the replacement complete?
Go to Step 5—
51. After the repair is complete, use the scan tool to select “DTC”,
then “Clear Info” function and operate the vehicle.
2. Review the scan tool “DTC Info”.
Has the last test failed or is the current DTC displayed?
Begin diagnosis
again
Go to Step 1
Repair verified
Exit DTC table

MANUAL TRANSMISSION7B–13
(4JX1)
225RW020
5. Apply a force of about 113N (26 Ib) to the tip of the
shift fork in the direction of the transmission to engage
the clutch pressure plate and release bearing.
NOTE: A clicking sound is heard when the release
bearing and the tip of the diaphragm spring engage each
other.
Check to see if they are securely engaged by pushing the
tip of the shift fork toward the engine while applying a
force of about 25 N (5.5 lb). If the shift fork will not move,
then they are securely engaged.
220RS006
6. Install three flywheel under cover (6VE1).

LIGHTING SYSTEM8A–1
BODY AND ACCESSORIES
CONTENTS
Lighting System 8A. . . . . . . . . . . . . . . . . . . . . . . . .
Wiper/Washer System 8B. . . . . . . . . . . . . . . . . . .
Entertainment 8C. . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring System 8D. . . . . . . . . . . . . . . . . . . . . . . . . .
Meter and Gauge 8E. . . . . . . . . . . . . . . . . . . . . . . Body Structure 8F. . . . . . . . . . . . . . . . . . . . . . . . . .
Seats 8G. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Security and Locks 8H. . . . . . . . . . . . . . . . . . . . . .
Sun Roof/Convertible Top 8I. . . . . . . . . . . . . . . .
Exterior/Interior Trim 8J. . . . . . . . . . . . . . . . . . . . .
LIGHTING SYSTEM
CONTENTS
Service Precaution 8A–2. . . . . . . . . . . . . . . . . . . . . .
Headlight Bulb 8A–3. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight 8A–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight and Associated Parts 8A–4. . . . . . . . .
Removal 8A–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight Adjustment 8A–4. . . . . . . . . . . . . . . . . .
Fog Light Bulb 8A–5. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog Light Assembly 8A–6. . . . . . . . . . . . . . . . . . . . .
Removal 8A–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog Light Adjustment 8A–6. . . . . . . . . . . . . . . . . .
Clarence Light Bulb 8A–6. . . . . . . . . . . . . . . . . . . . . .
Removal 8A–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Fog Light Bulb (RHD) 8A–7. . . . . . . . . . . . . . .
Removal 8A–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillight Bulb (Body) 8A–7. . . . . . . . . . . . . . . . . . . . .
Removal 8A–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–7. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillight Bulb (Bumper) 8A–8. . . . . . . . . . . . . . . . . . .
Removal 8A–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
License Plate Light Bulb (Body) 8A–8. . . . . . . . . . .
Removal 8A–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
License Plate Light Bulb (Bumper) 8A–9. . . . . . . . .
Removal 8A–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–9. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stoplight Bulb 8A–9. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal and Installation 8A–9. . . . . . . . . . . . . . . High Mount Stoplight 8A–10. . . . . . . . . . . . . . . . . . . .
Removal 8A–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Turn Signal Light Bulb 8A–10. . . . . . . . . . . . . .
Removal 8A–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Turn Signal Light Bulb 8A–11. . . . . . . . . . . . . . .
Removal 8A–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Turn Signal Light Bulb 8A–11. . . . . . . . . . . . . .
Removal 8A–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–11. . . . . . . . . . . . . . . . . . . . . . . . . . .
Backup Light Bulb 8A–12. . . . . . . . . . . . . . . . . . . . . . .
Removal 8A–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–12
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Dome Light Bulb 8A–12. . . . . . . . . . . . . . . . . . . . . . . .
Removal 8A–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Luggage Room Light Bulb 8A–13. . . . . . . . . . . . . . . .
Removal 8A–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Courtesy Light Bulb 8A–13. . . . . . . . . . . . . . . . . . . . . .
Removal 8A–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–13. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Map Light Switch/Bulb 8A–14. . . . . . . . . . . . . . . . . . .
Removal 8A–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter Illumination Bulb 8A–14. . . . . . . . .
Removal 8A–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–14. . . . . . . . . . . . . . . . . . . . . . . . . . .
Ashtray Illumination Bulb 8A–15. . . . . . . . . . . . . . . . .
Removal 8A–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glove Box Illumination Bulb 8A–15. . . . . . . . . . . . . . .
Removal 8A–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 8A–15. . . . . . . . . . . . . . . . . . . . . . . . . . . .

LIGHTING SYSTEM8A–19
Fog Light Switch
Removal
1. Disconnect the battery ground cable.
2. Remove the front console assembly(1).
Refer to the Instrument Panel Assembly in Body
Structure section.
3. Remove the lower cluster assembly(2).
Refer to the Instrument Panel Assembly in Body
Structure section.
4. Remove the instrument panel driver lower cover
assembly(3).
Refer to the Instrument Panel Assembly in Body
Structure section.
821RW024
5. Remove the instrument panel cluster assembly(4).
Refer to the Instrument Panel Assembly in Body
Structure section.
6. Disconnect the connector and push the lock from the
back side of the instrument panel cluster assembly to
remove the fog light switch(5).
825RW027
Installation
To install, follow the removal steps in the reverse order,
noting the following point:
1. Push in the switch with your fingers until the switch is
locked securely.

8A–22LIGHTING SYSTEM
Hazard Warning Switch
Removal
1. Disconnect the battery ground cable.
2. Remove the front console assembly(1).
Refer to the Instrument Panel Assembly in Body
Structure section.
3. Remove the lower cluster assembly(2).
Refer to the Instrument Panel Assembly in Body
Structure section.
4. Remove the instrument panel driver lower cover
assembly(3).
Refer to the Instrument Panel Assembly in Body
Structure section.
821RW024
5. Remove the instrument panel cluster assembly(4).
Refer to the Instrument Panel Assembly in Body
Structure section.
6. Disconnect the connector and push the lock from the
back side of the instrument panel cluster assembly to
remove the hazard warning switch(5).
825RW024
Installation
To install, follow the removal steps in the reverse order,
noting the following point.
1. Push in the switch with your fingers until it locks
securely.

8A–24LIGHTING SYSTEM
Rear Defogger Switch
Removal
1. Disconnect the battery ground cable.
2. Remove the front console assembly(1).
Refer to the Instrument Panel Assembly in Body
Structure section.
3. Remove the lower cluster assembly(2).
Refer to the Instrument Panel Assembly in Body
Structure section.
4. Remove the instrument panel driver lower cover
assembly(3).
Refer to the Instrument Panel Assembly in Body
Structure section.
821RW024
5. Remove the instrument panel cluster assembly(4).
Refer to the Instrument Panel Assembly in Body
Structure section.
6. Disconnect the connector and push the lock from the
back side of the instrument panel cluster assembly to
remove the rear defogger switch(5).
825RW023
Installation
To install, follow the removal steps in the reverse order,
noting the following point.
1. Push in the switch with your fingers until it locks
securely.

LIGHTING SYSTEM8A–25
Seat Heater Switch
Removal
1. Disconnect the battery ground cable.
2. Remove four fixing screws and disconnect the switch
connectors to remove the front console assembly(4).
3. Push the lock from the back side of the front console
assembly to remove the seat heater switch(5).
825RW025
Installation
To install, follow the removal steps in the reverse order,
noting the following point.
1. Push the switch with your fingers until it locks
securely.
Key Remind Switch (Starter Switch)
Removal and Installation
Refer to the removal and installation on steps of the
Starter Switch in this section.

8A–26LIGHTING SYSTEM
Illumination Controller
Removal
1. Disconnect the battery ground cable.
2. Remove the front console assembly(1).
Refer to the Instrument Panel Assembly in Body
Structure section.
3. Remove the lower cluster assembly(2).
Refer to the Instrument Panel Assembly in Body
Structure section.
4. Remove the instrument panel driver lower cover
assembly(3).
Refer to the Instrument Panel Assembly in Body
Structure section.
821RW024
5. Remove the instrument panel cluster assembly(4).
Refer to the Instrument Panel Assembly in Body
Structure section.
6. Disconnect the connector and push the lock from the
back side of the instrument panel cluster assembly to
remove the illumination controller(5).
825RW026
Installation
To install, follow the removal steps in the reverse order,
noting the following point.
1. Push in the switch with your fingers until the switch is
locked securely.

LIGHTING SYSTEM8A–27
Power/Winter Switch
Removal
1. Disconnect the battery ground cable.
2. Remove four fixing screws and disconnect the switch
connectors to remove the front console assembly(4).
3. Push the lock from the back side of the front console
assembly to remove the power/winter switch(5).
825RW204
Installation
To install, follow the removal steps in the reverse order,
noting the following point.
1. Push the switch with your fingers until it locks
securely.

WIPER/WASHER SYSTEM8B–7
Rear Wiper/Washer System
General Description
The circuit consists of the starter switch, rear wiper &
washer switch, rear wiper motor, rear washer motor and
rear intermittent relay.When the wiper & washer switch is turned on with the
starter switch on, the battery voltage is applied to the
wiper motor to activate the wiper.
The washer motor squirts glass cleaning fluid while the
washer switch is being pushed. The intermittent relay is
used to control motion of the wiper.
Rear Wiper and Washer Switch
Removal
1. Disconnect the battery ground cable.
2. Remove the front console assembly(1).
Refer to the Instrument Panel Assembly in Body
Structure section.
3. Remove the lower cluster assembly(2).
Refer to the Instrument Panel Assembly in Body
Structure section.
4. Remove the instrument panel driver lower cover(3).
Refer to the Instrument Panel Assembly in Body
Structure section.
821RW024
5. Remove the instrument panel cluster assembly(4).
Refer to the Instrument Panel Assembly in Body
Structure section.
6. Disconnect the connector and push the lock from the
back side of the instrument panel cluster assembly to
remove the rear wiper & washer switch(5).
821RW023
Installation
To install, follow the removal steps in the reverse order,
noting the following point:
1. Push the switch with your fingers until it locks
securely.