Jetta GL Wagon L4-1.9L DSL Turbo (ALH) (2002)
/Page-318002.png)
-
Connect test box VAG 1598/31 to control unit wiring harness.
-
Connect multimeter to measure voltage between test box sockets 4/5+20.
-
Switch on ignition.
-
Lift vehicle at front left.
-
Rotate front wheel and observe the LED in the LED test lamp. LED must flash. (approx. four times per wheel rotation).
NOTE: If necessary, hold the front right wheel to prevent it from turning.
If LED test lamp does not flash:
-
Check wiring from engine control unit connector contact 20 to dash panel insert for open/short circuit.
-
Check DTC memory and, if necessary, repair any malfunctions and then erase. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes/With Manufacturer's Scan
Tool
-
Read-out the readiness code. If the DTC memory has been erased or the Diesel Direct Fuel Injection Engine Control Module - J248- was
disconnected from permanent battery positive (B+), the readiness code must be generated again.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
