Golf L4-1896cc 1.9L DSL Turbo (1Z) (1997)
Glow Plug: Testing and Inspection
Special Tools, Testers And Auxiliary Items:
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VAG 1527B LED tester
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VW 1594 Adaptor kit
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3220 Flexible wrench
Test Conditions:
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Battery voltage 11.5 Volts minimum
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Ignition switched OFF
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Diesel direct injection system control unit (J248) OK
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Glow plug fuse (S125) OK
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Production number "180" must appear on the reverse side of the glow plug relay
Test Procedure:
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Disconnect Engine Coolant Temperature sensor harness connector -1-
NOTE: A "cold" engine condition is simulated when the G62 harness connector is disconnected and then the ignition is switched ON for the
appropriate glow period.
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Disconnect glow plug harness connector
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Switch ON ignition
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Switch Fluke 83 multimeter to 20 Volt range
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Connect multimeter between cyl. 1 glow plug connector and vehicle Ground and between cyl. 3 glow plug connector and Ground using jumper
wires from VW 1594 adaptor kit
Specification: Battery voltage for approx. 20 secs
If no voltage exists:
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Troubleshoot system using wiring diagrams
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Erase DTC memory and recreate readiness code
If voltage present:
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Switch OFF ignition
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Disconnect glow plug harness connector
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Connect VAG 1527B LED tester to battery positive (+) using jumper wires from VW 1594 adaptor kit
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Place LED tester on each glow plug one after the other
Diode lights up: glow plug OK
Diode does not light up: replace glow plug
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Remove and install glow plugs using 3220 flexible wrench
Tightening torque: 15 Nm (11 ft lb).
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Erase DTC memory and recreate readiness code