Mitsubishi L200. Manual - part 283
TROUBLESHOOTING
AUTOMATIC TRANSMISSION
23A-39
STEP 10. Connectors check: C-208 J/B
connector, B-10 and C-52 <4A/T, 5A/T-LHD>or C-
34 <5A/T-RHD> intermediate connector
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 11.
NO :
Repair the defective connector.
STEP 11. Check the harness between input shaft
speed sensor connector B-17 terminal No.3 and
junction block connector C-208 terminal No.2.
Check the power supply line for short or open circuit.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the wiring harness.
STEP 12. Measure the voltage at input shaft
speed sensor connector B-17.
(1) Disconnect the connector, and measure the
voltage between terminal 2 and earth at the
wiring harness side.
(2) Turn the ignition switch to the ON position.
OK: 4.5
− 4.9 V
Q: Is the check result normal?
YES :
Go to Step 18.
NO :
Go to Step 13.
STEP 13. Measure the voltage at A/T-ECU
connector C-12.
(1) Disconnect input shaft speed sensor connector
B-17.
(2) Turn the ignition switch to the ON position.
(3) Measure the voltage between A/T-ECU
connector C-12 terminal No.31 and earth.
OK: 4.5
− 4.9 V
Q: Is the check result normal?
YES :
Go to Step 16.
NO :
Go to Step 14.
STEP 14. Connector check: B-11 intermediate
connector, C-12 A/T-ECU connector
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 15.
NO :
Repair the defective connector.
STEP 15. Check the harness between input shaft
speed sensor connector B-17 terminal No.2 and
A/T-ECU connector C-12 terminal No.31.
Check the output line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the wiring harness.
STEP 16. Connector check: B-11 intermediate
connector, C-12 A/T-ECU connector
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 17.
NO :
Repair the defective connector.
STEP 17. Check the harness between input shaft
speed sensor connector B-17 terminal No.2 and
A/T-ECU connector C-12 terminal No.31.
Check the output line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the wiring harness.
STEP 18. Measure the output wave pattern of the
input shaft speed sensor at A/T-ECU connector
C-12 (using an oscilloscope).
(1) Shift the selector lever to the D range.
(2) Accelerate the vehicle to approximately 50 km/h
(shift range; 3rd).
(3) Connect an oscilloscope, and measure the
voltage between A/T-ECU connector C-12
terminal No.31 and earth.
OK: A wave pattern such as the one
shown on
(Check Procedure
Using an Oscilloscope) should be output,
and the maximum value should be 4.8 V
or more and the minimum value should
be 0.8 V or less. There should be no noise
in the output wave pattern.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Go to Step 19.
STEP 19. Connector check: C-12 A/T-ECU
connector
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 20.
NO :
Repair the defective connector.