Diagnostic Trouble Code (DTC) Information TCM-P081449

Condition 

An optic sensor is mounted in the gear selector module (GSM). The sensor is actuated by a control arm connected to the shiftlock solenoid. The optic sensor detects the position of the shiftlock solenoid. The solenoid is activated when the brake pedal is depressed. At the same time, the optic sensor is deactivated, signalling to the gear selector module (GSM) that the shiftlock solenoid is active.

With the ignition off and the gear selector in position P, the gear selector is locked mechanically as a result of the power to the solenoid having been cut. The gear selector is also locked in ignition positions I and 0.

The diagnostic trouble code (DTC) is stored if the control module detects that:

• The optic sensor cannot be activated after lever movement from P to R.
• The optic sensor has been active for more than 10 seconds with the gear selector in position D.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

• Ignition switch position II.

Fig 1: Identifying Gear Shift Assembly

Courtesy of VOLVO CARS CORPORATION

Substitute Value 

• None.

Possible Source 

• Internal fault in gear selector module (GSM).

Fault symptom[s] 

• Gauges/Gear indicator does not work
• Automatic transmission/No manual gear shift