B0846

DTC MSM B0846-5 Volt Feed Failure:

CIRCUIT DESCRIPTION
The Memory Seat Module (MSM) supplies a 5 Volt reference voltage to all seat position sensors from connector C1 terminal 13.

CONDITIONS FOR SETTING THE DTC
The 5 Volt Feed voltage falls out of range 4.6 volts to 5.2 volts.

ACTION TAKEN WHEN DTC SETS
The MSM does not allow any memory recall function: only manual seat movement is allowed. Only one seat motor may move at a time.

CONDITIONS FOR CLEARING THE MIL/DTC
The 5 Volt Feed voltage is within a valid operating range during the last monitoring cycle.

TEST DESCRIPTION
The numbers below refer to step numbers on the diagnostic table.
1. Checks for a short to ground in CKT 288 (GRY).
2. Checks for a short to battery voltage in CKT 788 (GRY).
3. Checks for an open in CKT 788 (GRY).