Dtc "C21" (P0110-H/L): Iat Sensor Circuit Malfunction - Suzuki GW250 Service Manual

4-46 FI SYSTEM DIAGNOSIS

DTC "C21" (P0110-H/L): IAT SENSOR CIRCUIT MALFUNCTION

DETECTED CONDITION AND POSSIBLE CAUSE
DETECTED CONDITION
C21 Output voltage is not within the following
range.
0.15 V
P0110 Sensor voltage is higher than specified
H
value.
Sensor voltage is lower than specified
L
value.
WIRING DIAGRAM
IAT sensor
14
TROUBLESHOOTING
When using the multi circuit tester, do not strongly touch the terminal of the ECM coupler with
a needle-point tester probe to prevent terminal damage.
NOTE:
After repairing the trouble, clear the DTC using SDS tool. (4-25)
Sensor voltage < 4.85 V
ECM coupler (Harness side)
1 2 3 4 5 6 7 8 9 10 11 12 13
15 16 17 18 19 20 21 22 23 24 25 26
POSSIBLE CAUSE
• IAT sensor circuit open or short.
• IAT sensor malfunction.
• ECM malfunction.
• IAT sensor circuit open or ground circuit open.
• IAT sensor circuit shorted to ground.
Y/R
B/Br
27 29 30 31 32 33 34 35
36 37 38 39 40 41 42 43 44
ECM
IATS
E2