C11" Cmp Sensor Circuit Malfunction - Suzuki AN650 2002 Service Manual

"C11" CMP SENSOR CIRCUIT MALFUNCTION

DETECTED CONDITION
No CMP sensor signal for more than 2 seconds
after receiving the starter signal.
INSPECTION
• Remove the maintenace lid. ( : 9-13)
1 Turn the ignition switch OFF.
Check the CMP sensor coupler for loose or poor contacts.
If OK, then measure the CMP sensor resistance.
Disconnect the CMP sensor coupler
resistance.
; CMP sensor resistance: 0.9 – 1.7 kΩ
If OK, then check the continuity between each terminal
and ground.
; CKP sensor continuity: ∞ Ω (Infinity)
z 09900-25008: Multi circuit tester
t Tester knob indication: Resistance (Ω)
Yes
2 Disconnect the CMP sensor coupler.
Crank the engine a few seconds with the starter motor,
and measure the CMP sensor peak voltage at the sensor.
; CMP sensor peak voltage: More than 0.5 V
Repeat the above test procedure a few times and
measure the highest peak voltage.
If OK, then measure the CMP sensor peak voltage at the
[
ECM terminals. (
z 09900-25008: Multi circuit tester
u Tester knob indication: Voltage ( - )
No
Yes
B/Y or Br wire open or shorted to ground, or poor
connection.
If wire and connection are OK, intermittent trouble or faulty ECM.
Recheck each terminal and wire harness for open circuit and
poor connection.
1
and measure the
(B/Y – Brown)
B/Y – Ground
(
Br – Ground
No
Replace the CMP sensor
with a new one.
+ -
( B/Y –
d
/ )
Loose or poor contacts on the CMP
sensor coupler or ECM coupler.
Replace the CMP sensor with a
new one.
Replace the ECM with a new one,
and inspect it again.
• Metal particles or foreign material being attached
on the CMP sensor and rotor tip.
• CMP sensor circuit open or short.
• CMP sensor malfunction.
• ECM malfunction.
1
1
)
2
Br)
[ d
or
FI SYSTEM/ CVT SYSTEM 6-27
POSSIBLE CAUSE
Ω
Peak volt
adaptor
ECM couplers
Ω
V