Oil pressure switch, checking

Fig 1: Identifying V.A.G 1342 Oil Pressure Tester

Courtesy of VOLKSWAGEN UNITED STATES, INC.

• Remove 1.4 bar Oil pressure switch F1 (black insulation) and screw it into tester.
• Screw tester into oil filter housing in place of oil pressure switch.
• Ground tester brown lead (-).
• Connect Voltage tester VAG 1527 B diode test lamp to battery positive terminal (+) and to oil pressure switch using auxiliary cables from Supplemental measuring toolset VAG 1594 A.

LED should not illuminate

If the LED illuminates:

• Replace 1.4 bar oil pressure switch F1.

If the LED does not illuminate:

• Start engine and let idle.

LED should light at 1.2-1.6 bar.

If the LED does not light:

• Replace 1.4 bar oil pressure switch F1.