AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-262
STEP 4. Using scan tool MB991958, read the A/T
diagnostic trouble code.
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) Check for A/T diagnostic trouble code.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC 52 set?
YES : Replace the PCM.
NO : The procedure is complete.
STEP 5. Check the hydraulic pressure (for torque
converter).
Measure the hydraulic pressure for torque converter. Check if
the hydraulic pressure is within the standard value. Refer to
P.23A-29
, Hydraulic Pressure Test.
Q: Is the hydraulic pressure within the standard value?
YES : Go to Step 7.
NO : Go to Step 6.
STEP 6. Adjust line pressure.
Adjust line pressure. Refer to
P.23A-42
, Line Pressure Adjust-
ment. Then check the symptom.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Go to Step 8.
STEP 7. Replace the PCM.
Q: Is the symptom eliminated?
YES : The procedure is complete.
NO : Go to Step 8.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827