Dtc "C21" (P0110-H/L): Iat Sensor Circuit Malfunction - Suzuki kq750 Service Manual

1A-49 Engine General Information and Diagnosis:

DTC "C21" (P0110-H/L): IAT Sensor Circuit Malfunction

Detected Condition and Possible Cause
Detected Condition
Output voltage is not with in the following
range.
C21
0.15 V ≤ Sensor voltage < 4.85 V
Sensor voltage is higher than specified
H
value.
P0110
Sensor voltage is lower than specified
L
value.
Wiring Diagram
IAT sensor
Troubleshooting
CAUTION
!
When using the multi-circuit tester, do not strongly touch the terminal of the ECM coupler with a
needle pointed tester probe to prevent the terminal damage or terminal bend.
NOTE
After repairing the trouble, clear the DTC using SDS tool. Refer to "Use of SDS Diagnosis Reset
Procedures (Page 1A-13)".
• IAT sensor circuit open or short.
• IAT sensor malfunction.
• ECM malfunction.
• IAT sensor circuit open or ground circuit open.
• IAT sensor circuit shorted to the ground.
Dg
B/Br
ECM coupler (Harness side)
Possible Cause
ECM
IAT
28
24
E2
I831G1110019-01
B831G21104015
I831G1110082-01