Yanmar 3TNV82A Troubleshooting Manual page 164

FAILURE DIAGNOSIS
4. Check of the output voltage (fit with sensor):
• Connect the 2G eco-checker harness between E-ECU and machine's harness (for details, see [How to
use the 2G eco-checker harness] (P.1-135). And connect the all connectors (sensors, E-ECU).
• Measure the voltage between sensor signal E38 and E28 using a circuit tester.
Voltage
E38 ≤ 4.5[V]
4.5[V] < E38 < 5.5[V]
5.5[V] ≤ E38
NG
OK
1-162
Status
NG
OK
(Normal range)
NG
• Check if the harness is damaged, or if the wiring is correct.
• Replace the harness.
Replace E-ECU.
Method and Procedure of Failure Diagnosis
• Replace the harness.
• Replace the accelerator sensor.
Replace E-ECU.
• Replace the harness.
• Replace the accelerator sensor.
TNV DI Service Manual
Action