Golf GTI L4-2.0L (ABA) (1997)
Continuation
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Switch ignition off.
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Connect VAG 1598/18 test box to ECM wiring harness.
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With throttle valve closed connect multimeter measure resistance at test box sockets 10 and 33.
Specification: Maximum 5.0 ohms
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Slowly open throttle.
Specification: Infinite Ohms
If the specifications are not attained:
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Separate 8-pin connector to throttle valve control module -J338-.
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Check wiring between test box and 8-pin connector for open circuit according to wiring diagram.
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Terminal 3 and test box socket 10
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Terminal 7 and test box socket 33
Resistance: Maximum 1.5 ohms
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Check wiring at 8-pin connector for short circuit between terminal 7 and test box socket 10.
Specification:Infinite Ohms
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Reconnect connector.
If no wiring malfunction is detected:
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Replace throttle valve control module -J338-.
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Read the readiness code, If DTC memory has been erased, repair must be verified via appropriate display group: Readiness code, creating.
Checking Throttle Position Actuator And Throttle Position Sensor
Test Conditions
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Coolant temperature at least 80°C(176°F)
Test sequence
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Engine running at idle
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Connect VAG 1551/1552 scan tool and select "Engine Electronics" address word 01.
Indicated On Display
Rapid data transfer HELP
Select function XX
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Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press -Q- button to confirm input.
Indicated On Display