Powertrain Management: Service Precautions

ELECTRONIC CONTROL SYSTEM

a. Disconnect the power by either turning the ignition switch OFF or disconnecting the negative (-) terminal cable from the battery before removing SFI wiring connectors, terminals, etc.

HINT: Always check the diagnostic trouble code before disconnecting the negative (-) terminal cable from the battery.

b. When installing the battery, be especially careful not to incorrectly connect the positive (+) and negative (-) cables.
c. Do not permit parts to receive a severe impact during removal or installation. Handle all SFI parts carefully, especially the ECM.
d. Be careful during the troubleshooting as there are numerous transistor circuit, and even slight terminal contact can cause further troubles.
e. Do not open the ECM cover.
f. When inspecting in rainy weather, take care to prevent entry of water. Also, when washing the engine compartment, prevent water from getting on the SFI parts and the wiring connectors.
g. Parts should be replaced as the original assembly.
h. Care should be taken when pulling out and inserting the wiring connectors.
1. Release the lock and pull out the connector.
2. Fully insert the connector and check that it is locked.




i. Use SST for the inspection, the injector and the wiring connector test.

SST 09842-30070