B2606

CIRCUIT DESCRIPTION
The seat adjuster motors are equipped with position sensors. The position sensors are supplied with a common 5 volt reference circuit and low reference circuit from the memory seat module. The memory seat module receives a signal voltage from each position sensor whenever a memory seat module output function is active.

CONDITIONS FOR RUNNING THE DTC
The memory seat module detects a switch signal active or a memory function request.

CONDITIONS FOR SETTING THE DTC
^ The memory seat module detects the position sensor signal circuit under 0.1 volt or over 4.78 volts.
^ The condition must be present for 2 seconds.

ACTION TAKEN WHEN THE DTC SETS
^ A history DTC is stored in the memory seat module.
^ Memory seat module DTCs can only be set as history codes even if the malfunction is current.
^ The memory functions of the adjuster motor for which the DTC has set will be disabled for as long as the fault is current.

CONDITIONS FOR CLEARING THE DTC
Memory seat module DTCs may be cleared only by using a scan tool or the IPC clearing DTCs feature.

DIAGNOSTIC AIDS
Operate the adjuster motor through the full range of adjustment while monitoring the position sensor parameter on the scan tool. If the problem is intermittent refer to Testing for Intermittent and Poor Connections in Diagnostic Aids.

TEST DESCRIPTION

Steps 1-4:

Steps 5-15:

The number(s) below refer to the step number(s) on the diagnostic table.
3. Tests for the proper operation of the signal circuit in the high voltage range.
4. Tests for the proper operation of the signal circuit in the low voltage range. If the fuse in the jumper opens when you perform this test, the signal circuit is shorted to voltage.
5. Tests for a short to ground in the 5 volt reference circuit.