1A-29 Engine General Information and Diagnosis:
2 1) Turn the ignition switch OFF.
2) Disconnect the ECM coupler. Refer to “ECM Removal
and Installation in Section 1C (Page 1C-1)”.
3) Insert the needle pointed probes to the lead wire coupler.
4) Check there is continuity between the W wire “A” and
ECM terminal “27”. Also, there is no continuity among
the W wire “A” and ECM terminals.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity ( )
Is the continuity OK?
Go to Step 3. Short circuit in the W
wire.
3 1) Measure the CKP sensor resistance.
Special tool
(A): 09900–25008 (Multi circuit tester set)
Tester knob indication
Resistance (Ω)
CKP sensor resistance
160 – 240 Ω (B/R – B/Y)
Is the resistance OK?
Replace the ECM with a
new one. Refer to “ECM
Removal and
Installation in Section
1C (Page 1C-1)”.
• Inspect that metal
particles or foreign
material stuck on the
CKP sensor and rotor
tip.
• If there are no metal
particles and foreign
material, then replace
the CKP sensor with
a new one. Refer to
“CKP Sensor
Removal and
Installation in Section
1C (Page 1C-2)”.
Step Action Yes No
(A)
“A”
(B)
“27”
I944H1110164-01
(A)
I944H1110010-01
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