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4-100 FI SYSTEM DIAGNOSIS
“C49” (P1656) PAIR CONTROL SOLENOID VALVE CIRCUIT MALFUNCTION
INSPECTION
Step 1
1) Turn the ignition switch OFF.
2) Remove the air cleaner box. (5-14)
3) Check the PAIR control solenoid valve coupler for loose or
poor contacts.
If OK, then measure the PAIR control solenoid valve resis-
tance.
4) Remove the PAIR control solenoid valve. (11-7)
5) Measure the resistance between terminals.
PAIR valve resistance: 18 – 22
Ω
at 20 – 30 °C (68 – 86 °F)
(Terminal – Terminal)
09900-25008: Multi-circuit tester set
Tester knob indication: Resistance (Ω)
Is the resistance OK?
6) After repairing the trouble, clear the DTC using SDS tool.
(4-27)
DETECTED CONDITION POSSIBLE CAUSE
PAIR control solenoid valve voltage is not input to
ECM.
• PAIR control solenoid valve circuit open or short
• PAIR control solenoid valve malfunction
• ECM malfunction
ECM
Side-stand
relay
Ignition
switch
Engine stop
switch
O/W
PAIR control
solenoid valve
W/G
PAIR
To side-stand
switch
1
YES Go to Step 2.
NO
Replace the PAIR control solenoid valve with a
new one.
1