Toyota Camry (XV70): System Description
SYSTEM DESCRIPTION
SYSTEM DESCRIPTION
(a) The Electronic Controlled Automatic Transaxle (ECT) is an automatic transaxle that electronically controls shift timing using the ECM. The ECM detects electrical signals that indicate engine and driving conditions, and controls shift points based on driver habits and road conditions.
Shift shock is reduced by controlling the engine and transaxle simultaneously.
In addition, the ECT has the following features:
- Diagnostic function.
- Fail-safe function when a malfunction occurs.
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The ECM is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there are no malfunctions in the CAN commu
Road Test
ROAD TEST PROBLEM SYMPTOM CONFIRMATION (a) Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem is that the transaxle does not shift up, shift down, or t
Mechanical System Tests
MECHANICAL SYSTEM TESTS STALL SPEED TEST
CAUTION:
Do not perform a stall test if there are any people or objects near the vehicle.
The vehicle could begin moving suddenly, resulting in a
SEE MORE:
Lost Communication with ECM/PCM "A" Missing Message (U010087,U012587,U012987,U014087,U015587)
DESCRIPTION When a malfunction is detected between various ECUs and sensors, these DTCs are stored.
DTC No. Detection Item
DTC Detection Condition Trouble Area
U010087 Lost Communication with ECM/PCM "A" Missing Message
3 seconds or more after the ignition switch to ON
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
HINT: Using the GTS to read the Data List allows the values or states of sw
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