4-52 FI SYSTEM DIAGNOSIS
5) If OK, then check the continuity between each terminal and
ground.
$ Injector continuity: ∞ Ω (Infinity)
! 09900-25008: Multi-circuit tester set
% Tester knob indication: Resistance (Ω)
Are the resistance and continuity OK?
6) After repairing the trouble, clear the DTC using SDS tool.
(#4-26)
Step 2
1) Turn the ignition switch ON.
2) Measure the injector voltage between O/W wire and ground.
$ Injector voltage: Battery voltage
(

+ O/W –

- Ground)
NOTE:
Injector voltage can be detected only 3 for seconds after ignition
switch is turned ON.
! 09900-25008: Multi-circuit tester set
& Tester knob indication: Voltage (')
Is the voltage OK?
"
3) After repairing the trouble, clear the DTC using SDS tool.
(#4-26)
YES Go to Step 2.
NO Replace the injector with a new one. (#5-10)
YES
• W/Bl wire open or shorted to ground, or poor

B
connection
• If wire and connection is OK, intermittent trou-
ble or faulty ECM.
• Recheck each terminal and wire harness for
open circuit and poor connection.
• Replace the ECM with a known good one, and
inspect it again.
NO Open circuit in the O/W wire
When using the multi-circuit tester, do not strongly
touch the terminal of the ECM coupler with a needle
pointed tester probe to prevent the terminal damage
or terminal bend.
1
2
V
2
ECM coupler (Harness side)
To Next Page
Loading...
Need help?
General
