I assume the Z is wired the same as reg C4's
Putting 12V to terminal G of the ALDL connector under the dash will make the pump ( if it is working) run full time bypassing the relays
IIRC , on my '90 the panel under the dash has to come off to access the relays
Putting 12V to terminal G of the ALDL connector under the dash will make the pump ( if it is working) run full time bypassing the relays
IIRC , on my '90 the panel under the dash has to come off to access the relays