Method For Version 1 (A)

Applies to:
940, 1992-1993
4-door models to chassis No. 114464 incl.
5-door models to chassis No. 066166 incl.

Note:
Power seats in the above models can be operated only with the ignition on.

A1

- Switch off ignition.

A2





- Manual fault tracing/calibration: Connect auxiliary lead between green lead (alternative 2, later version) in connector at front of driver's seat and test lead on DLC (diagnostic unit) A.

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 terminal 6 on the VST adapter cable.

A3

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 on ignition.

A4

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) or four times to select test mode 4 (calibration).

Control module will exit diagnostic function after approx. 1 minute if no activity takes place between module and DLC. Module will also exit diagnostic function if ignition is switched off for at least 5 seconds. Seat cannot be operated either with control buttons or memory buttons while using diagnostic system.

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 page 7.