FixVault

MULTIFUNCTION Switch

NOTE: For cruise control switch testing, see appropriate CRUISE CONTROL SYSTEMS article. For wiper/washer switch testing, see appropriate WIPER/WASHER SYSTEMS article.

Turn ignition off. Disconnect electrical connector for appropriate switch to be tested. Using DVOM, check continuity between specified terminals for each switch position. See appropriate CONTINUITY TEST table. Refer to illustrations for switch terminal identification. See Fig 1 , Fig 2 or Fig 3 . If continuity does not exist for selected switch position, replace multifunction switch.

HEADLIGHT SWITCH CONTINUITY TEST

Switch Position Continuity Between Terminals
Parking Lights On F & K
Headlights On
Low Beam F & K; C & A
High Beam F & K; C, E & G
Flash-To-Pass C, E & G
IGNITION SWITCH CONTINUITY TEST

Switch Position Continuity Between Terminals
ACC/OFF G & H
RUN A & B; F, G & H
CRANK A & C; F & H
Key In Ignition Switch D & E
TURN/HAZARD SWITCH CONTINUITY TEST

Switch Position Continuity Between Terminals
Off E & F
Left Turn A & D; E & F
Right Turn C & D; E & F
Hazard On A, C & D; F & G
Fig 1: Identifying Headlight Switch Terminals
G00013358Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Ignition Switch Terminals
G99F03020Courtesy of GENERAL MOTORS CORP.
Fig 3: Identifying Turn/Hazard Switch Terminals
G00013359Courtesy of GENERAL MOTORS CORP.