SEAT Workshop Service and Repair Manuals

Hall sender -G40-: checking

Special tools and workshop equipment required

t	Manual multimeter -VAG 1526C- or digital multimeter -VAG 1715-

t	Auxiliary cable kit -VAG 1594C-

t	Adapter cable -VAG 1598/31-

t  Adapter cable -VAG 1598/22- t  Current flow diagrams, electrical fault finding and fitting locations Test prerequisites l  Battery voltage min. 11.5 V

Checking sequence

–  Remove engine protection together with air filter -arrows-, separate the gas vent pipe from the engine.

–  Extract the 3-pin connector from the Hall sender -G40--arrow-.

–  Connect multimeter to measure voltage at contacts 1 (positive) and 3 (earth) of Hall sender -G40-, using the auxiliary cables of the auxiliary cable kit -VAG 1594C-. –  Switch on ignition. t  Specification: min. 4.5 V –  Switch ignition OFF. If no voltage is present: Engine code letters: BXV - BBM –  Connect the engine tester -VAG 1598/22- to the control unit cable harness.

Engine code letters: AZQ - BME

–  Connect the engine tester -VAG 1598/31- to the control unit cable harness. Without connecting the engine control unit.

All other vehicles continued

–  Check wiring between the adapter cable -VAG 1598/31- or adapter cable -VAG 1598/22- and 3-pin connector for open circuit according to current flow diagram.

Connection	Female socket VAG 1598/31	Female socket VAG 1598/22
1	96	62
2	105	60
3	83	54
Wire resistance: 1.5 Ω max.

–  Additionally check wires for short to one another. t  Specification: ∞ Ω. If no wiring fault is detected and voltage was present between contacts 1 + 3: –  Replace the Hall sender -G40- → Item. If no fault is found in wiring and there is no voltage between contacts 1+3: –  Replace the engine control unit → Chapter.