The following components can be activated via the HHT: Alarm horn (H3). Headlamps. Starter lock-out relay module (K38) (up to 01/94). ATA status indicator (E33). Backup lamps.

		Test scope	Test connection	Test condition	Nominal value	Possible cause/Remedy
1.0		Alarm horn (H3)		Press F2 Press F3	ON, Horn signals OFF	23 13.0
2.0		ATA status indicator (E33)		Press F2 Press F3	ON OFF, ATA indicator illuminates	23 26.0
3.0		Starter lock-out relay module (K38) 1) Vehicles with ATA status indicator (E33)		Press F2 Turn ignition key to position "3" (circuit 50) Press F3	ON Engine will not start OFF Engine starts	23 25.0
4.0		Not applicable for U.S.A. vehicles		-	-	-
5.0		Not applicable for U.S.A. vehicles		-	-	-
6.0		Headlamps		Press F2	ON Headlamps illuminate	23 16.0
7.0		Backup lamps		Press F2	ON Backup lamps illuminate	23 17.0, 18.0
8.0		Not applicable for U.S.A. vehicles		-	-	-
9.0		Not applicable for U.S.A. vehicles		-	-	-
10.0		Not applicable for U.S.A. vehicles		-	-	-

1) As of 01/94, the starter lock-out function is controlled by the central locking system (PSE control moduel).