GTI V6-2.8L (BDF) (2002)
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Generate readiness code.
See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If indication remains at approx. -40 degree C:
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End diagnosis and switch ignition off.
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Check wires according to wiring diagram.
Continuation of test if indication is approx. 140 degree C:
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Disconnect 5-pin connector from Mass Air Flow (MAF) Sensor -G70- with Intake Air Temperature (IAT) Sensor -G42- (arrow).
If indication jumps to approx. -40 degree C:
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End diagnosis and switch ignition off.
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Replace Mass Air Flow (MAF) Sensor -G70-:
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Vehicles with engine code AFP, item 4,
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Vehicles with engine code BDF, item 6.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data.
See: Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase Diagnostic Data
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Generate readiness code.
See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
If indication remains at approx. 140 degree C:
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End diagnosis and switch ignition off.
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Check wires according to wiring diagram.
Checking wiring
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Connect test box to control module wiring harness, connect test box for wiring test.
See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For
Wiring Test
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Check wires between test box and 5-pin connector for open circuit according to wiring diagram.
Terminal 1 + socket 26
Terminal 3 + socket 27
Wire resistance: max: 1.5 Ohm
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Also check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: infinite Ohm