Passat (B3)
Checking functions
Checking Lambda control
Special tools, testers, measuring instruments and auxiliary items required
Check conditions
Functional check
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→ Indicated on display: |
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→ Indicated on display: |
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Indicated on display: (1...4 = Display zones) |
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→ Indicated on display: |
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Indicated on display: (1...4 = Display zones) |
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fluctuate at least 10 times per minute in range of 0... 1.0 V. If the Lambda regulation does not fluctuate as stated:
If the specifications are not obtained again:
If the voltage change is slower, determine cause of fault. => Page 24-96 . If the displayed figure remains constant:
Possible causes of fault if probe control frequency is too slow:
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Checking basic voltage
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If the specification is not obtained:
If the specification is attained:
Checking Lambda probe wiring |
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Note: On vehicles with throttle valve control unit J338 there is no connection between Lambda probe connector contact 3 and housing. Specification must be∞ω. If no wiring fault is detected:
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