14" (P0120-H/L) Tp Sensor Circuit Malfunction - Suzuki TU250X Service Manual

4-36 FI SYSTEM DIAGNOSIS

"14" (P0120-H/L) TP SENSOR CIRCUIT MALFUNCTION

DETECTED CONDITION
14 Output voltage is not within the following
range.
0.35 V
P0120 Sensor voltage is higher than specified
H
value.
Sensor voltage is lower than specified
L
value.
TP sensor

* When using the multi circuit tester, do not strongly touch the terminal of the ECM coupler with
a needle-point probe to prevent the terminal damage or terminal bend.
* The TP sensor has been adjusted, removed or replaced, the TP learned valve reset must be
performed using special tool. (4-40)
INSPECTION
NOTE:
After repairing the trouble, clear the DTC using SDS tool.
(4-24)
Step 1 (When indicating 14:)
1) Turn the ignition switch OFF.
2) Check the TP sensor coupler for loose or poor contacts.
If OK, then measure the TP sensor input voltage.
Sensor voltage < 4.9 V
POSSIBLE CAUSE
• TP sensor maladjusted
• TP sensor circuit open or short
• TP sensor malfunction
• ECM malfunction
• TP sensor circuit shorted to VCC or ground circuit
open
• TP sensor circuit open or shorted to ground or
VCC circuit open
B/Br
V
R
1
ECM
E2
TP
VCC