Power Circuits (I30)
- Turn ignition switch to RUN position. Using a DVOM, check for battery voltage between ground and PCM terminals No. 4, 24, 67 and 72 by backprobing. See Figure . If battery voltage is present at all terminals, go to next step. If battery voltage is not present at all terminals, check fusible link, fuse "G" and wiring. Repair as necessary.
- Turn ignition switch to OFF position. Using a DVOM, check for battery voltage between ground and PCM terminal No. 80 (power back-up) by backprobing. If battery voltage is not present, check for overheated relays, fusible links and wiring. Repair as necessary