Volkswagen Workshop Service and Repair Manuals

Note:

Only gold-plated contacts may be used when servicing the sender connector contacts

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required

• ◆ Test box V.A.G 1598/22
• ◆ Hand multimeter V.A.G 1526 or multimeter V.A.G 1715

• ◆ Adapter set V.A.G 1594
• ◆ Current flow diagram

Test sequence

• ‒ → Pull 4-pin connector off intake manifold pressure sender (G71) and intake air temperature sender (G42) -arrow-.

• ‒ Remove wiper arms and cowl panel:

=> Electrical system; Repair group 92; windscreen wiper system; removing and installing windscreen wiper system

• ‒ → Connect test box V.A.G 1598/22 to control unit wiring harness.

• ‒ → Check wires between test box and 4-pin connector (connector to control unit) for open circuit using current flow diagram.
       Contact 3+socket 62
       Contact 4+socket 70
       Wire resistance: max. 1.5 ω
• ‒ Additionally check wires for short to one another, to vehicle earth and to battery positive.
       Specification: ∞ω

If no fault is detected in the wiring:

• ‒ Renew the intake manifold pressure sender (G71) with intake air temperature sender (G42)
  , item 15 .