Volvo Workshop Manuals
940 L4-2.3L SOHC VIN 88 B230F (1992)
Relays and Modules > Relays and Modules - Body and Frame > Power Seat Control Module > Component Information > Technical Service Bulletins > Power Seat - Fault Tracing/Calibration > Page 68
Remove circuit breaker 35. Fusebox is located at left-hand end of dashboard.
Ignition must be off for at least 5 seconds before performing this step.
Press and hold any button on control panel of seat to be tested while switching ignition on. Keep button depressed for at least 1 second after turning
Reinstall circuit breaker 35.
Diagnostic system must now be activated within one minute, i.e., test button must be pressed once to select DTM 1 (self-diagnostics) or four times to
Control module will exit diagnostic function after approx. 1 minute if no activity takes place between module and DLC. Module will also exit
Codes for DTM 1 are listed and explained in the table on page 9 of the SM; use of DTM 4 (calibration) is described on SM page 7.
Method For Version 5 (E)
Unlike later 1993 variants, fault tracing or calibration of power seats in the above models can be carried out without removing the fuses.
The seat can be operated with the ignition switched off.
Switch off ignition.
Manual fault tracing/calibration: Connect test lead from DLC A to socket No. 6 on DLC B.
Fault tracing/calibration using VST with OBD System Memory Cassette: Connect instrument to DLC B.
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