Chapter 4 EI system diagnosis Section 4 EI system troubleshooting
4—30
Step 2
1)
Turn the ignition switch to the “ON”position.
2)
Measure the injector voltage between B/G
wire and ground.
Tester knob indication:Voltage(—)
Is the voltage OK?
YES
●
Puwireopenor
shortedtoground,orpoor
B5
(J2-5)
connection of
ECU coupler
If wire and connection areOK,
intermittent trouble or faulty ECU.
●
Recheck each terminal and wire
harness for open circuit and poor
connection.
NO
Inspect the fuel pump or fuel pump
relay.
Battery voltage
⊕
B/G
-
⊖
Ground,
Injector voltage
Injector voltage can be detected only 3 seconds after
ignition switch is turned “ON” position.
NOTE
B5
B5
To Next Page