Shug
Member
I'm resurrecting a 1993 SL320 that's sat outside for 5 years, but supposedly drove into where it sat. So far I've removed a dead alarm/immobiliser at the dash and reinstated the one cut line (starter feed from ignition key) I'm gradually working through electrics, have replaced all the torpedo fuses and cleaned up contacts in the fuse boxes etc, but I've come across something that's just stumped me.
My car has the base module up front and the separate fuel pump relay in the boot, not the MAS module. I've replaced fuel pumps, and trying to test their running on the car, I bridged the pins in the relay to make them run constantly. But at the connector for the pumps under the rear seat, there's no voltage. Healthy 12v at the relay. My understanding was that it was a straight line in the loom from relay to that connector, but looking at wiring routing, the power feed to that connector seems to disappear into the crossmember. Any clues what else I should be checking? There was nothing I removed from the alarm that was a power feed to the pump - I could understand if it was a signal feed to the relay, but the relay is getting power and then somehow the wiring then deviates from what I understand it should be.
A bit stumped.
My car has the base module up front and the separate fuel pump relay in the boot, not the MAS module. I've replaced fuel pumps, and trying to test their running on the car, I bridged the pins in the relay to make them run constantly. But at the connector for the pumps under the rear seat, there's no voltage. Healthy 12v at the relay. My understanding was that it was a straight line in the loom from relay to that connector, but looking at wiring routing, the power feed to that connector seems to disappear into the crossmember. Any clues what else I should be checking? There was nothing I removed from the alarm that was a power feed to the pump - I could understand if it was a signal feed to the relay, but the relay is getting power and then somehow the wiring then deviates from what I understand it should be.
A bit stumped.
