Fuel Pump Relay
- Remove fuel pump relay from board. Connect positive lead of multimeter to socket 8 (terminal 30) and negative lead to socket 11 (terminal 3) of connector. Measure voltage. If reading is 12 volts, go to step 3). If reading is 0 volts, go to next step.
- Remove negative lead of multimeter from socket 11 (terminal 3) and connect to vehicle ground. If reading is 12 volts, check Brown wire from terminal 31 for short. If voltage is 0, check Red wire from terminal 30 for short. Repair wiring if necessary.
- Switch on ignition and check voltage at socket 9 (terminal 15) of connector. If reading is 0 volts, check Black/Red wire from terminal 15 to fuse box for short. Repair wiring if necessary. If reading is 12 volts, go to next step.
- Using dwell meter, connect positive lead to socket 10 (terminal TD). Dwell angle should be 7-34°. If dwell is off, check Green/Yellow wire from jack 10 (terminal TD) to TSZ (transistor ignition) switching unit for short. If wiring is good, replace switching unit. If dwell reading is good, go to next step.
- Bridge socket 7 (terminal 87) and socket 8 (terminal 30) with jumper wire. If fuel pump is running, test is completed. If fuel pump is not running, go to next step.
- Check Black/Red/White wire from terminal 87 to fuel pump for short. If wiring is good, replace fuel pump relay. If fuel pump still does not run, replace fuel pump.