Passat V6-3.6L (BLV) (2006)
Engine Control Module: Testing and Inspection
Engine Control Module (ECM), Checking Voltage Supply
Engine Control Module (ECM), Checking Voltage Supply
Recommended special tools and equipment
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V.A.G 1526 multimeter or V.A.G 1715 multimeter
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V.A.G 1594 connector test kit
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Wiring diagram
Test requirements
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Fuses on E-box in engine compartment, left side, must be OK.
NOTE: Fuses on this fuse holder are labelled "SB" in the wiring diagram.
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Fuses on fuse holder in instrument panel, left side, must be OK.
NOTE: Fuses on this fuse holder are labelled "SC" in the wiring diagram.
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Generator (GEN) -C- and Voltage Regulator (VR) -C1- OK, checking.
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Battery voltage must be at least 11.5 Volts.
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All electrical consumers such as, for example, lights and rear window defroster must be switched off.
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Ground (GND) connections between engine and chassis must be OK.
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Ignition switched off.
Test sequence
Observe safety precautions.
Observe rules for cleanliness.
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Connect test box to 94-pin connector of wiring harness, connecting test box for wiring test.
Engine Control Module (ECM) is not connected.
Checking voltage supply "terminal 30"
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Check voltage supply between
sockets 1 and 92
sockets 2 and 92
sockets 4 and 92 of test box.
Specified value: at least 11.5 V
If there is a malfunction in voltage supply:
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Check wire connection to fuse holder and Ground (GND) connection of Engine Control Module (ECM) -J623- according to wiring diagram.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.