Toyota Camry Manual page 113

AX1–40
AUTOMATIC TRANSAXLE – TROUBLESHOOTING
HOW TO PROCEED WITH TROUBLESHOOTING
For troubleshooting using a volt/ohm meter, see page AX1–40142.
HOW TO PROCEED WITH TROUBLESHOOTING USING VOLT
OHM METER
1. CUSTOMER PROBLEM ANALYSIS
Using the customer problem analysis check sheet for reference, ask the customer in as much
detail as possible about the problem.
2. CHECK AND CLEAR THE DIAGNOSTIC TROUBLE CODES (PRECHECK)
Before confirming the problem symptom, first check the diagnostic trouble code if there are any
trouble codes stored in memory. When there are trouble codes, make a note of them, then clear
them and proceed to "3. Problem Symptom Confirmation".
3. PROBLEM SYMPTOM CONFIRMATION
Confirm the problem symptoms.
4. SYMPTOM SIMULATION
If the problem does not reappear, be sure to simulate the problem by mainly checking the circuits
indicated by the diagnostic trouble code in step 2, using "Problem Simulation method".
5. DIAGNOSTIC TROUBLE CODE CHECK
Check the diagnostic trouble codes. Check if there is abnormality in the sensors or the wire
harness.
If a trouble code is output, proceed to "6. Diagnostic Trouble Code Chart".
If the normal code is output, proceed to "7. Matrix Chart of Problem Symptoms".
Be sure to proceed to "6. Diagnostic Trouble Code Chart" after steps 2 and 3 are completed.
If troubleshooting is attempted only by following the trouble code stored in the memory is output,
errors could be made in the diagnosis.
6. DIAGNOSTIC TROUBLE CODE CHART
If a trouble code is confirmed in the diagnostic trouble code check, proceed to the inspection
procedure indicated by the matrix chart for each diagnostic trouble code.
7. PRELIMINARY CHECK
Carry out a preliminary check of the transaxle oil level, throttle cable adjustment, etc.
8. SHIFT POSITION SIGNAL CHECK
Carry out the shift position signal check when the transaxle gears do not up–shift, down–shift
or lock–up. This is to check the signal output condition from the ECM to each solenoid. If the
results are NG, then it is likely that the trouble is in the electrical system (particularly in the
sensors or the ECM).
Proceed to Part 1 (Electrical System) under "
11. Matrix Chart of Problem Symptoms". If all the
circuits specified in Part 1 are OK, check the ECM and replace it.
9. MECHANICAL SYSTEM TEST
(Stall Test, Time Leg Test, Line Pressure Test)
If the malfunction is found in the stall test, time lag test or line pressure test, check the parts
indicated in the respective tests.
14. MANUAL SHIFTING TEST
If the results of the manual driving test are NG, it is likely that the trouble is in the mechanical
system or hydraulic system. Proceed to Part 2 (Mechanical System) under the Matrix Chart of
Problem Symptoms.