4-34 FI SYSTEM DIAGNOSIS
DTC “C13” (P1750-H/L) or “C17” (P0105-H/L): IAP SENSOR CIRCUIT
MALFUNCTION
DETECTED CONDITION AND POSSIBLE CAUSE
WIRING DIAGRAM
TROUBLESHOOTING
NOTE:
After repairing the trouble, clear the DTC using SDS tool. (
4-25)
DETECTED CONDITION
POSSIBLE CAUSE
C13/C17
IAP sensor voltage is not within the fol-
lowing range.
0.5 V
Sensor voltage < 4.85 V
NOTE:
Note that atmospheric pressure varies
depending on weather conditions as
well as altitude.
Take that into consideration when
inspecting voltage.
• Clogged vacuum passage between throttle body
and IAP sensor.
• Air being drawn from vacuum passage between
throttle body and IAP sensor.
• IAP sensor circuit open or shorted to ground.
• IAP sensor malfunction.
• ECM malfunction.
P1750/
P0105
H
Sensor voltage is higher than specified
value.
• IAP sensor signal circuit is open or shorted to
VCC or ground circuit open.
• IAP sensor signal circuit is shorted to ground or
VCC circuit open.
L
Sensor voltage is lower than specified
value.
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.
ECM
R
IAP.
.
#1
E2
IAP sensor (#1)
IAP sensor (#2)
R
W/R
B/Br
IAP.
. #2
Bl/W
B/Br
VCC
15 16 17 18 19
22 23
20 21
24 25 26
2 3 4 5 6
9 10
7 8
11 12 13
27 28 29 30 31 32 33 34 35
36 37 38 39 40 41 42 43 44
1
14
ECM coupler (Harness side)
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