AUTOMATIC TRANSMISSION (3 A / T) (VEHICLE WITH WU-TWC) 7B-29
TROUBLESHOOTING
STEP ACTION YES NO
1 Was “AUTOMATIC TRANSMISSION DIAGNOSTIC FLOW
TABLE” performed?
Go to Step 2. Go to
“AUTOMATIC
TRANSMISSION
DIAGNOSTIC
FLOW TABLE”.
2 Is DTC other than shift malfunction (DTC P0751/P0756)
displayed?
Go to applicable
DTC Flow Table.
Go to Step 3.
3 Perform Road Test to check if upshift and downshift take
place at specified vehicle speed, referring to “ROAD TEST”
in this section.
Do they take place properly?
Intermittent
trouble. Check
electrical circuit
of system for
intermittent
referring to
“INTERMITTENT
AND POOR
CONNECTION”
in Section 0A.
Go to Step 4.
4 Perform Manual Shift Road Test referring to “MANUAL ROAD
TEST” in this section.
Is test result satisfactory?
Go to Step 5. Go to “A/T
Basic Check”.
5 Check Transmission Range Sensor and Its Circuit according
to Step 1 of DTC P0705 Flow Table.
Are they in good condition?
Go to Step 6. “D” range
signal circuit
shorted to other
signal circuit or
TR sensor
malfunction.
6 Check Output Shaft Speed Sensor and Its Circuit referring to
“OUTPUT SHAFT SPEED SENSOR CHECK” in this section.
Are they in good condition?
Go to Step 7. Output shaft
speed sensor
circuit open or
short or output
shaft speed
sensor
malfunction.
7 Check Shift Solenoid A and B for Operation referring to
“SHIFT SOLENOID VALVE CHECK” in this section.
Are they in good condition?
Substitute a
known-good
PCM and
recheck.
Replace shift
solenoid A or B.