Engine General Information and Diagnosis: 1A-90
Step Action Yes No
1 5) If OK, then check the continuity between each terminal
and ground.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Injector continuity
∞ Ω (Infinity)
Are the resistance and continuity OK?
Go to Step 2. Replace the injector
with a new one. Refer to
“Throttle Body
Disassembly and
Assembly in Section 1D
(Page 1D-11)”.
2 1) Turn the ignition switch ON.
2) Measure the injector voltage between the Y/R wire and
ground.
NOTE
Injector voltage can be detected only for 3
seconds after ignition switch is turned ON.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Voltage ( )
Injector voltage
Battery voltage
((+) terminal: Y/R – (–) terminal: Ground)
Is the voltage OK?
Replace the ECM with a
new one. Refer to “ECM
Removal and
Installation in Section
1C (Page 1C-1)”.
Open circuit in the Y/R
wire.
(A)
I944H1110076-01
(A)
I944H1110077-02
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