Mitsubishi Outlander GS45X. Manual — part 1687
AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>
TSB Revision
AUTOMATIC TRANSAXLE
23C-53
LOGIC FLOW CHARTS (Monitor Sequence)
.
Good
END
No
No
No
No
No
Malfunction
Malfunction
No
AC802664
Vabs: Vehicle speed signal of ABS
Voss: Calculated vehicle speed
by output shaft speed sensor
Vabs
20 km/h (12.4 mph)
Voss
5 km/h (3.1 mph)
START
Continuous failure for 2.5 secs.
Continuous failure for 2 sec.
Yes
Yes
Yes
Voss
20 km/h (12.4 mph)
Yes
Yes
Yes
Yes
No
Rapid Voss change
-20 km/h (-12.4 mph)/ 50 msec
Not occur Vabs change
-20 km/h (-12.4 mph)/ 50 msec
AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>
TSB Revision
AUTOMATIC TRANSAXLE
23C-54
DTC SET CONDITIONS
Check Conditions
• Vehicle speed: 20 km/h (12.4 mph) or more.
• Vehicle speed signal from ABS: more than -20
km/h (-12.4 mph)/0.05 seconds.
Judgment Criteria
• Rapid vehicle speed change: -20 km/h (-12.4
mph)/0.05 second or less. (2 seconds)
Check Conditions
• Vehicle speed signal from ABS: 20 km/h (12.4
mph) or more.
Judgment Criteria
• Vehicle speed: 5 km/h (3.1 mph) or less. (2.5 sec-
onds)
.
OBD-II DRIVE CYCLE PATTERN
Drive with the vehicle speed 20 km/h (12.4 mph).
.
TROUBLESHOOTING HINTS (THE MOST
LIKELY CAUSES FOR THIS CODE TO BE
SET ARE:)
• Malfunction of the output shaft speed sensor sys-
tem circuit
• Damaged harness or connector
• Malfunction of the output shaft speed sensor
• Malfunction of the TCM
• Malfunction of the output shaft speed sensor
rotor (A/T assembly)
DIAGNOSIS
STEP 1. Check the TCM terminal voltage and frequency.
[C-37 TCM connector (vehicle side, connected)]
Check that the voltage between C-37 terminal No. 48 and C-38
terminal No. 13 or C-38 terminal No. 26 is 0 V, and then check
the frequency of C-37 terminal No. 37.
• At D range, vehicle speed is 30 km/h (19 mph): Approx. 588
Hz
Q: Is the check result normal?
YES : Go to Step 6.
NO : Go to Step 2.
STEP 2. Check the power supply and sensor ground.
[B-108 output shaft speed sensor connector (vehicle side, dis-
connected)]
• With the ignition switch ON: Terminal No. 1 to No. 3 → Bat-
tery positive voltage
Q: Is the check result normal?
AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>
TSB Revision
AUTOMATIC TRANSAXLE
23C-55
STEP 3. Check the wiring harness between the output
shaft speed sensor and TCM.
Check for continuity between B-108 output shaft speed sensor
terminals and C-37 TCM terminals.
NOTE: Prior to the wiring harness inspection, check the inter-
mediate connectors A-12 and repair that if necessary.
• Between B-108 terminal No. 2 and C-37 terminal No. 37:
Continuity exists.
When the continuity check result is OK, check that the wiring
harness is not shorted to the body and other wiring harness.
Q: Is the check result normal?
YES : Replace the output shaft speed sensor with the one of
the same transaxle of the same model. Then go to
Step 7.
NO : Repair or replace the failure section, and then go to
Step 6.
STEP 4. Check the path between the ignition switch and
the output shaft speed sensor.
• Check the wiring harness for an open/short circuit between
the ignition switch and B-108 output shaft speed sensor
connector terminal No. 1.
• Check for a blown fuse.
Q: Is the check result normal?
YES : Go to Step 5.
NO : Repair or replace the failure section.
STEP 5. Check the wiring harness between the output
shaft speed sensor and TCM.
Check for continuity between B-108 output shaft speed sensor
terminals and C-37 TCM terminals.
NOTE: Prior to the wiring harness inspection, check the inter-
mediate connectors A-12 and repair that if necessary.
• Between B-108 terminal No. 1 and C-37 terminal No. 48:
Continuity exists.
When the continuity check result is OK, check that the wiring
harness is not shorted to the body and other wiring harness.
Q: Is the check result normal?
YES : Go to Step 8.
NO : Repair or replace the failure section.
STEP 6. Drive the vehicle for a while.
Check that the normal code is displayed.
Q: Is the check result normal?
YES : The procedure is complete.
NO : Replace the TCM.
AUTOMATIC TRANSAXLE DIAGNOSIS <A/T>
TSB Revision
AUTOMATIC TRANSAXLE
23C-56
STEP 7. After replacing the output shaft speed sensor,
drive the vehicle for a while, and then check the DTC
again.
Q: Is the check result normal?
YES : Replace the output shaft speed sensor.
NO : Replace the TCM. Then go to Step 9.
STEP 8. Check the TCM connector pin terminal and the
connection status.
Q: Is there a failure point?
YES : Repair or replace the failure section.
NO : Replace the TCM.
STEP 9. Diagnostic trouble code recheck.
1. Erase the diagnostic trouble code.
2. Drive the vehicle at 20 km/h (12.4 mph) or more.
3. Check if the diagnostic trouble code is set.
Q: Is the diagnostic trouble code set?
YES : Remove the A/T. Carry out the internal check and
repair the defective part (the output shaft speed
sensor rotor may be defective).
NO : The procedure is complete.
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