Toyota T100 1996 Service Manual page 966

MF−2
1996 TOYOTA T100 (RM449U)
MFI (3RZ−FE) −
6. 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 battery terminal cable.
(b) When installing the battery, be especially careful not to in-
correctly connect the positive (+) and negative (−) cable
terminals.
(c) Do not permit parts to receive a severe impact during re-
moval or installation. Handle all SFI parts carefully, espe-
cially the ECM.
(d) Do not be careless during troubleshooting as there are
numerous transistor circuits and even slight terminal con-
tact can further troubles.
(e) Do not open the ECM cover.
(f) When inspecting during rainy weather, take care to pre-
vent entry of water. 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 is required when pulling out and inserting wiring con-
nectors.
(1)
(2)
(i) When inspecting a connector with a volt/ohmmeter.
(1)
(2)
(3)
(4)
(5)
SST
SST
FI2553
MFI SYSTEM
Release the lock and pull out the connector, pulling
on the connectors.
Fully insert the connector and check that it is locked.
Carefully take out the water−proofing rubber if it is
a water−proof type connector.
Insert the test probe into the connector from wiring
side when checking the continuity, amperage or
voltage.
Do not apply unnecessary force to the terminal.
After checking, install the water−proofing rubber on
the connector securely.
Use SST for inspection or test of the injector or its
wiring connector.
09842−30070
Author :
954
Date :