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 64
Power seats in the above models can be operated only with the ignition on.
Switch off ignition.
Manual fault tracing/calibration: Connect auxiliary lead between green lead (alternative 2, later version) in connector at front of driver's seat and test
On 940 without a green lead (alternative 1, earlier version), connect auxiliary lead to connector terminal 4.
Fault tracing/calibration using Volvo Scan Tool (VST) with On-Board Diagnostic (OBD) System Memory Cassette: Connect auxiliary lead to
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
Diagnostic system must now be activated within 1 minute, i.e., test button must be pressed once to select diagnostic test mode (DTM) 1 (self-diagnostics)
Control module will exit diagnostic function after approx. 1 minute if no activity takes place between module and DLC. Module will also exit diagnostic
Codes for DTM 1 are listed and explained in the table on page 9 of service manual (SM) TP 32015/1; use of DTM 4 (calibration) is described on SM
Method For Version 2 (B)
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