Powertrain Management: Service Precautions

ELECTRONIC CONTROL SYSTEM

a. Before removing SFI wiring connectors, terminals, etc., first disconnect the power by either turning the ignition switch to LOCK or disconnecting the negative (-) terminal cable from the battery.

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

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




i. Use SST for inspection or test of the injector or its wiring connector.
SST 09842 30080