Omega B
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Checking with TECH 1
The electronic control unit for the electric seat and mirror adjustment with memory is equipped with self-diagnosis and a serial data lead to the diagnostic plug, so that a system check with TECH 1 in conjunction with program module OPEL/VAUXHALL OMEGA-B 1994 ECU can be used for recognising and localising faults.
For precise, accurate diagnosis, observe the following sequence for checking with TECH 1:
Read F2:TROUBLE CODE
The control unit (K103) monitors the electric seat/mirror adjustment with memory system for incorrect performance. If a fault is recognised, a trouble code is stored in the control unit, which can then be shown on the TECH 1 display using the function read F2:TROUBLE CODE. Stored trouble codes can only be deleted using TECH 1.
F0:DATA LIST
The function F0:DATA LIST allows the current status of the monitored signals to be read out. The values displayed by TECH 1 can be compared with nominal conditions in conjunction with the F0:DATA LIST table in the Checking Procedures. If the actual values deviate from the nominal values, the table provides instructions for elimination of the fault. If the TECH 1 displays the report "NOT PRES.", the indicated parameter is not evaluated by the system.
F5:ACTUATOR TEST
The actuator test is used to perform a quick check of the vertical and horizontal motors in the driver's and co-driver's outside mirrors and the inside mirror. The measurements displayed on TECH 1 provide an indication of the adjustment range.
F3:SNAPSHOT
The snapshot function should be used if the preceding measures did not indicate a malfunction, although a complaint has been made by the customer. For snapshots, recreate the adjustment position or the operating situation in which, according to the customer, the fault occurred. The snapshot function can also be used for localising loose contacts or sporadically occurring faults.
F7:PROGRAMMING
After replacement of the control unit or one of the seat potentiometers, the control unit must be reprogrammed. During programming, all of the seat's adjustment paths are run through to allow the values for the potentiometers and the end stops to be stored again.
During programming, the driver's seat and the other seats in the vehicle interior must not be occupied. Reason: during programming, the motor end stops are not checked, i.e. there is no pinch guard.
Procedure, see section 5.6.7, table F7:PROGRAMMING
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