Dtc "C29" (P1654-H/L): Secondary Throttle Position Sensor (Stps) Circuit Malfunction - Suzuki GSF650A Service Manual

1A-79 Engine General Information and Diagnosis:

DTC "C29" (P1654-H/L): Secondary Throttle Position Sensor (STPS) Circuit Malfunction

Detected Condition and Possible Cause
Detected Condition
Signal voltage is not within the following
range.
Difference between actual throttle opening
C29
and opening calculated by ECM is larger
than specified value.
0.15 V ≤ Sensor voltage < 4.85 V
Sensor voltage is higher than specified
H
value.
P1654
Sensor voltage is lower than specified
L
value.
Wiring Diagram
STP 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-15)".
• STP sensor maladjusted.
• STP sensor circuit open or short.
• STP sensor malfunction.
• ECM malfunction.
• STP sensor circuit shorted to Vcc or ground circuit open.
• STP sensor circuit open or shorted to the ground or Vcc
circuit open.
R
B/Br
Y/W
ECM coupler (Harness side)
Possible Cause
ECM
11 Vcc
29
E2
20 STP
B817H21104019
I718H1110083-02
I718H1110240-01