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 NGS scan tool. See EQUIPMENT HOOKUP . Using NGS scan tool, 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 (ACS)	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 Motor Switch (BLR SW)	Blower Switch In Positions 1 or 2	OFF	KM
   Brake On/Off Switch (STP SW)	Brake Pedal Depressed	ON	FD
   Brake On/Off Switch (STP SW)	Brake Pedal Release	OFF	FD
   Daytime Running Lights (DRL SW)	Parking Brake Released, Key On	ON	---
   Daytime Running Lights (DRL SW)	Parking Brake Set, Key On	OFF	---
   Headlight Switch (HDL SW)	Headlights On	ON	DI
   Headlight Switch (HDL SW)	Headlights Off	OFF	DI
   High Fan Control (FANHP)	DLC TEN Pin Grounded & Gas Pedal Pressed	ON	KF
   High Fan Control (FANHP)	DLC Not Grounded	OFF	KF
   Idle Switch (IDL SW)	Gas Pedal Depressed	OFF	DH
   Idle Switch (IDL SW)	Gas Pedal Released	ON	DH
   Overdrive Off Switch (O/D SW)	O/D Off Switch Depressed	ON	TB
   Overdrive Off Switch (O/D SW)	O/D Off Switch Released	OFF	TB
   Transmission Range Switch (RANGE)	Lever In P Position	P/N	TD
   Transmission Range Switch (RANGE)	Lever In R Position	REV	TD
   Transmission Range Switch (RANGE)	Lever In N Position	P/N	TD
   Transmission Range Switch (RANGE)	Lever In D Position	DRIVE	TD
   Transmission Range Switch (RANGE)	Lever In 2 Position	MAN2	TD
   Transmission Range Switch (RANGE)	Lever In 1 Position	MAN1	TD
   Park/Neutral Position Switch (NL SW)	Shifter In Neutral	ON	TA
   Park/Neutral Position Switch (NL SW)	Shifter In Any Gear	OFF	TA
   Clutch Pedal Position (CPP SW)	Clutch Pedal Depressed	ON	TA
   Clutch Pedal Position (CPP SW)	Clutch Pedal Released	OFF	TA
   Rear Window Defrost (DEF SW)	Rear Defroster Switch On	ON	DI
   Rear Window Defrost (DEF SW)	Rear Defroster Switch On	OFF	DI