Troubleshooting With Volt/Ohmmeter (Ms) - Toyota 7M-GE Repair Manual

EFI SYSTEM
- Troubleshooting with Volt/Ohmmeter (MS)
FI-57
-.
TROUBLESHOOTING WITH
VOLT/OHMMETER (MS)
NOTE: The following troubleshooting pro-
cedures are designed for inspection of each separ-
ate system, and therefore the actual procedure
may vary somewhat.. However, troubleshooting
should be performed refering to .the inspection
methods described in this manual.
.._
Before beginning,inspection, it is best to first make
a simple check of the fuses, fusible links and the
The following troubleshooting procedures are
based on the supposition that the trouble 'lies in
either a short or open circuit in a component out-
side the computer or a short circuit within the
computer.
If engine trouble occurs even though proper.
operating voltage is detected in the computer con-
nector, then it can be assumed that the ECU is
faulty and should be replaced.
LOCATIoN- OF FUSES AND FUSIBLE LINKS
condition of the connectors.
Junction Block and Relay Block Cassettes