Main Relay (Computer/Fuel System): Testing and Inspection

Fig. 89 Control relay coils L1 & L2 test chart. 4-89.6/1.5L:

Fig. 90 Control relay coils L3 test chart. 4-89.6/1.5L:

1. Check continuity between control relay terminals, Fig. 89, with relay coil energized and not energized. To energize coils, L1 and L2, apply battery voltage across terminals 6 and 4.
2. Check continuity between control relay terminals, Fig. 90, with relay coil energized and not energized. To energize coil, L3, apply battery voltage across terminals 8 and 4.
3. If test results are not satisfactory, replace control relay.