Mitsubishi Montero (2004+). Manual - part 952
AUTOMATIC TRANSMISSION DIAGNOSIS
TSB Revision
AUTOMATIC TRANSMISSION
23A-383
STEP 9. Using scan tool MB991958, check data list item 75:
4LLc Detection Switch.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991958 to data reading mode.
• Item 75: 4LLc Detection Switch.
• When the transfer shift lever position is 4LLc, scan
tool MB991958 display should be "ON."
• When the transfer shift lever position is other than
4LLc, scan tool MB991958 display should be "OFF."
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the switch operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunction
.
NO : Replace the PCM.
STEP 10. Measure the resistance at 4LLc detection switch
connector C-05.
(1) Disconnect connector C-05 and measure at the switch side.
(2) Turn the ignition switch to the "ON" position.
(3) Transmission range should be "N" range.
(4) Check for the continuity between terminal 1 and ground.
• When the transfer shift lever position is 4LLc there
should measure less than 2 ohms.
• When the transfer shift lever position is other than 4LLc
there should be open circuit.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the resistance 2 ohms?
YES : Go to Step 11.
NO : Replace the 4LLc detection switch. Refer to GROUP
AC307591 AC
MB991911
MB991824
MB991827
AC307591
DATA LINK
CONNECTOR
AC204395
CONNECTOR : C-05
AG
C-05 (BR)
C-05
1
AC204918
C-05 HARNESS CONNECTOR :
4LLc DETECTION SWITCH SIDE
DA
1