Description & Operation

The switch monitor test uses PIDs to check the operation of certain switches (and related circuits) that do not set codes.

1. 1)  Turn ignition on. Connect scan tester. See EQUIPMENT HOOKUP . Using scan tester, enter PID/DATA MONITOR AND RECORD function.
2. 2)  Select PIDs for switches in question. See SWITCH TESTING table. Operate switch as described in table. If switch does not operate as described, proceed to circuit test suggested in table.
   SWITCH TESTING
   
   

   Switch (PID)	Test Condition	PID Value	Circuit Test
   A/C Selector Switch (ACS)	A/C Selector Switch In A/C Position	ON	KM
   "	A/C Selector Switch In Other Than A/C Position	OFF	KM
   Blower Motor Switch (BLR SW)	Blower Switch In Positions 3 or 4	ON	KM
   "	Blower Switch In Positions 1 or 2	OFF	KM
   Brake On/Off Switch (STP SW)	Brake Pedal Depressed	ON	FD
   "	Brake Pedal Release	OFF	FD
   Daytime Running Lights (DRL SW)	Parking Brake Released, Key On	ON	(1)
   "	Parking Brake Set, Key On	OFF	(1)
   Headlight Switch (HDL SW)	Headlights On	ON	DI
   "	Headlights Off	OFF	DI
   High Fan Control (FANHP)	DLC TEN Pin Grounded & Gas Pedal Pressed	ON	KF
   "	DLC Not Grounded	OFF	KF
   Idle Switch (IDL SW)	Gas Pedal Depressed	OFF	DH
   "	Gas Pedal Released	ON	DH
   Overdrive Off Switch (O/D SW)	O/D Off Switch Depressed	ON	ON
   Rear Window Defrost (DEF SW)	Rear Defroster Switch On	ON	DI
   "	Rear Defroster Switch On	OFF	DI
   (1) Information not available.