FI SYSTEM DIAGNOSIS 4-33
Step 3
CKP sensor and signal rotor check
1) Remove the generator cover. (
3-19)
2) Check that end face of the CKP sensor
1
and generator
teeth
2
are free from any metal particles and damage.
Is check result OK?
Step 4
CKP sensor signal check
1) Connect the ECM couplers.
2) Crank the engine several seconds with the starter motor, and
measure the CKP sensor peak voltage at the coupler.
09900-25008: Multi circuit tester set
Tester knob indication: Voltage (
)
CKP sensor peak voltage: 1.5 V or more
Is check result OK?
YES
Go to Step 4.
NO
Clear or replace defective parts.
3
3
YES
Replace the ECM with a known good one, and
inspect it again.
NO
Replace the CKP sensor with a new one.
(
4-91)
V
Peakvolt
adaptor
4
