FAILURE DIAGNOSIS
1-146
TNV DI Service Manual
Method and Procedure of Failure Diagnosis
Work Description
1. Continuity check (foot pedal only):
• Remove the foot pedal from the harness.
• Check the foot pedal continuity with a specified pedal opening using a circuit tester.
2. Continuity check (foot pedal + harness):
• Connect foot pedal and harness, and remove E-ECU from the harness.
•Check the foot pedal continuity with a specified pedal opening using a circuit tester.
Pedal opening
Continuity
Status
Between A and GND
Between B and GND
Full close position
Unavailable
Available
OK: normal
Unavailable
Unavailable
NG: Internal circuitry fault
Available
Unavailable
NG: Internal circuitry fault
Available
Available
NG: Internal circuitry fault
Full open position
Available
Unavailable
OK: normal
Unavailable
Unavailable
NG: Internal circuitry fault
Unavailable
Available
NG: Internal circuitry fault
Available
Available
NG: Internal circuitry fault
NG
Replace the foot pedal.
OK
Check the continuity with the foot pedal and the harness being connected.
→
Go to
[2. Continuity check (foot pedal + harness):]
Pedal opening
Continuity
Status
Between E-14 and GND Between E-13 and GND
Full close position
Unavailable
Available
OK: normal
Unavailable
Unavailable
NG: Internal circuitry fault
Available
Unavailable
NG: Internal circuitry fault
Available
Available
NG: Internal circuitry fault
Full open position
Available
Unavailable
OK: normal
Unavailable
Unavailable
NG: Internal circuitry fault
Unavailable
Available
NG: Internal circuitry fault
Available
Available
NG: Internal circuitry fault
NG
Check the harness for correct continuity.
→
Go to [3. Check of harness continuity:]
OK
Check if the foot pedal movement is correctly recognized with the diagnosis tool
“Diagnosis Test”.
→
Go to [4. Foot pedal movement check:]
TNV_DI_SM_A4-Troubleshooting.book 146 ページ 2007年11月15日 木曜日 午後5時27分