Testing Lambda Probe Heater - Skoda Octavia Workshop Manual

OCTAVIA
Edition 11.98
S00.5109.51.20
Fuel Preparation/Fuel Injection

Testing lambda probe heater

Special tools, testers and aids required
♦ Test box V.A.G 1598/22
♦ Hand-held multimeter, e.g. V.A.G 1526 A or
multimeter V.A.G 1715
♦ Adapter cable set V.A.G 1594 A
♦ Diode test lamp, e.g. V.A.G 1527
♦ Current flow diagram
Test condition
K l Fuse 43 must be o.k.
Testing voltage supply
- Unplug the 4-pin connector to the lambda
probe (G39).
K - Use the auxiliary cables to connect the
multimeter to contacts 1 + 2 of the connector
for voltage measurement.
Note:
Carry out the measurement at room tempe-
rature. The resistance rises sharply even if there
is only a slight increase in temperature.
- If a fault is determined, replace the lambda
probe.
If the heating element has continuity, test the
voltage supply of the lambda probe heater:
K - Use the auxiliary cables to connect the
multimeter to contacts 1 and 2 of the
connector to the wiring loom.
- Start engine and run for a few minutes.
Specification: approx. battery voltage
Požadovaná hodnota 2.7 až 3 .
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