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FI SYSTEM DIAGNOSIS 4-33
“C11” (P0340) CMP SENSOR CIRCUIT MALFUNCTION
INSPECTION
1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. (5-3)
3) Remove the air cleaner box. (5-14)
4) Check the CMP sensor coupler for loose or poor contacts.
If OK, then measure the CMP sensor peak voltage.
5) Connect 3 new 1.5 V batteries in series, 1 kΩ resistor and the
multi-circuit tester as shown in the illustration.
09900-25008: Multi-circuit tester set
Tester knob indication: Voltage ()
DETECTED CONDITION POSSIBLE CAUSE
The signal does not reach ECM for 3 sec. or more,
after receiving the starter signal.
• Metal particles or foreign material being stuck on
the CMP sensor and rotor tip
• CMP sensor circuit open or short
• CMP sensor malfunction
• ECM malfunction
ECM
B/Br
VCC
E2
R
B/Y
CMP sensor
CMP
B/Bl
Bl/Y
W
1 kΩ
W
L/Y
B/L