Testing Notes & Cautions
NOTE:
Procedures in the TESTING section of this article are not in absolute numerical order. Procedures not related to this engine have been removed to eliminate confusion.
NOTE:
No repairs or adjustments can be made to the ECA components. If diagnosis shows Processor or Calibration units are not functioning properly, they must be replaced.
CAUTION:
Shorting the wiring harness across a solenoid valve can burn out circuitry in the ECA that controls the solenoid valve actuator.
CAUTION:
The EEC system contains transistors which CANNOT tolerate excessive voltage surges or transient voltage. Never try to jump-start the vehicle with 24 volts.
CAUTION:
The oxygen sensor resistance CANNOT be measured by connecting an ohmmeter directly to its output lead. Sensor damage will result if this is attempted.