1A-60 Engine General Information and Diagnosis:
DTC “C22” (P1450-H/L): AP Sensor Circuit Malfunction
B947H11104016
Detected Condition and Possible Cause
Wiring Diagram
ECM coupler (Harness side)
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 terminal damage.
NOTE
After repairing the trouble, clear the DTC using SDS tool. Refer to “Use of SDS Diagnosis Reset
Procedures” (Page 1A-14).
Detected Condition Possible Cause
C22
AP sensor voltage is not within the
following 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 with dust.
• AP sensor circuit open or shorted to ground.
• AP sensor malfunction.
• ECM malfunction.
P1450
H
Sensor voltage is higher than specified
value.
• AP sensor circuit is open or shorted to VCC or ground
circuit open.
L
Sensor voltage is lower than specified
value.
• AP sensor circuit is shorted to ground or VCC circuit
open.
ECM
R
APS
E2
VCC
AP sensor
G/Y
B/Br
35
20
7
I837H1110040-01
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I837H1110007-02
Manuals by Motomatrix / The Solution For Lost Motorcycle Coded Keys
email: info@motomatrix.co.uk / www.motomatrix.co.uk
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