CopperJoy
Member
Recently I did an engine rebuild/replaced head gasket on a 1999.5 VW Golf TDI (ALH) 1.9L I am not able to start the car as I am getting CEL Codes P1163/P1354. I also had P1563 (Fuel Quantity Adjuster Lower Limit Reached) which has cleared. I have been doing research and reading a lot of the TDIClub forums. I took voltage reading on the Injection Pump 10-Pin wiring harness for all 10 pins and I have no continuity on pin 4 of the plug which runs to the ECU. All other 9 pins have continuity. Pin 4 is a Brown/Blue wire for the Piston Movement & Fuel Temperature Sender per the wiring diagram in my Chilton Repair Manual. The wiring diagram shows that the Brown/Blue Pin 4 wire goes to the ECU as T121/103. I've traced the wire to the ECU which is actually pin out 78. I've tested the continuity of pin 78 (in smaller wiring plug on right side of ECU) and I get NO CONTINUITY. I've replaced Relay 109, checked Engine Management Fuses F32,F34,F43, checked metal fuses and continuity on the Battery Fuse Holder. My Battery is not fully charged and I have to jump it to try to start it and testing continuity while its connected to jumper cables. I already replaced the Electronic Throttle Assembly for the Injection Pump thinking that I originally had an issue there. Car started and ran fine before I did the rebuild. At this point I am baffled.
Is there something that I am missing here or is it possible that my ECU has been compromised?
My Injection/Crank/Cam timing is all spot on. Fuel Filter/Injection Pump/Injector lines are primed.
P1163/P1354 are both Short to B+/Open Circuit. Just not sure what wires to check.
Thanks, it's been quite a headache.
Is there something that I am missing here or is it possible that my ECU has been compromised?
My Injection/Crank/Cam timing is all spot on. Fuel Filter/Injection Pump/Injector lines are primed.
P1163/P1354 are both Short to B+/Open Circuit. Just not sure what wires to check.
Thanks, it's been quite a headache.
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