Suzuki AN400 - DTC C14 (P0120;H;L): TP Sensor Circuit Malfunction

Engine General Information and Diagnosis: 1A-30
DTC “C14” (P0120/H/L): TP Sensor Circuit Malfunction
B705H11104018
Detected Condition and Possible Cause
Wiring Diagram
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 (Page1A-15)”.
Detected Condition Possible Cause
Output voltage is not within the following range.
Difference between actual throttle opening and opening
calculated by ECM is larger than specified value.
0.35 V ≤ Sensor voltage < 4.90 V
NOTE
• If SDS is used, P0120-H is indicated when
sensor voltage is higher than specified
value.
• If SDS is used, P0120-L is indicated when
sensor voltage is lower than specified
value.
• TP sensor maladjusted
• TP sensor circuit open or short
• TP sensor malfunction
• ECM malfunction
NOTE
• When P0120-H is displayed, it is possible that
TP sensor circuit is shorted to Vcc or ground
circuit is open.
• When P0120-L is displayed, it is possible that
TP sensor circuit is open or shorted to
ground or Vcc circuit is open.
Y
ECM
R
B/Br
Vcc
TP
E2
TP sensor
(14)
(5)
(4)
I705H1110017-02