A6 Sedan V6-2.8L (ATQ) (2000)
If specified value is not obtained:
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Check wire connection from terminal 3 of connector to Fuel Pump (FP) relay via fuse for open circuit and short circuit to Ground (GND).
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Repair open circuit or short circuit if necessary.
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Connect multimeter to terminal 2 and terminal 3 of connector for voltage measurement.
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Operate starter briefly.
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Specification: approx. battery voltage
NOTE: Ground (GND) from the ECM is present at terminal 2 of connector.
If specified value is not obtained:
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Check wire connections.
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Connect multimeter to terminal 1 and terminal 2 of connector for voltage measurement.
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Switch ignition on.
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Specification: about 5 V
If specified value is not obtained:
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Check wire connections.
Check Wire Connections For Mass Air Flow (MAF) Sensor
NOTE: Signal wire is also checked during wire test.
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Connect VAG1598/31 test box at wiring harness to ECM, do not connect ECM Refer to "Scan Tool Testing/Wire And Component Test Using
VAG1598/31 Test Box", See: Testing and Inspection