Passat Wagon L4-1.9L DSL Turbo (AHU) (1997)
terminal 3 + socket 23
terminal 5 + socket 1
terminal 6 + socket 13
Wire resistance: max. 1.5 Ohms.
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Also check wires for shorting to one another
Specification: Infinite Ohms.
If specifications obtained, check EGR Vacuum Regulator Solenoid valve N18 as follows:
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Disconnect N18 valve harness connector
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Switch Fluke 83 multimeter to resistance range
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Connect multimeter between valve terminals and measure resistance:
Specification: 14 to 18 Ohms.
If specification not obtained:
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Replace EGR Vacuum Regulator Solenoid valve N18
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Display the readiness code
If DTC memory was erased:
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Create readiness code again
If specification obtained:
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Switch ON ignition
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Connect Fluke 83 multimeter between connector terminal 1 and engine Ground using jumper wires from VW 1594 adaptor kit
Specification: approx. battery voltage.
If specification not obtained:
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Switch OFF ignition
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Check wiring for open circuit/short to positive or negative between Test Box and connector using wiring diagram:
terminal 1 + socket 68
terminal 2 + socket 25
Wire resistance: max. 1.5 Ohms.
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Also check wires for shorting to one another, to Ground and battery positive:
Specification: Infinite Ohms.
If wiring OK:
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Replace Diesel direct injection system ECM J248
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Display the readiness code