Toyota Corolla (E120): Check and replace ecu
Notice
: start an inspection of the connector from the backside of the connector on the wire harness side with the connector connected to the ecu.
When no measurement condition is specified, perform the inspection with the engine stopped and also the ignition switch on.
- First check the ecu ground circuit. If it is faulty, repair it.
If it is normal, the ecu could be faulty. In this case, replace the ecu with one that functions normally and check if the symptoms appear.
- Measure the resistance between the ecu ground
terminal and body ground.
Resistance: 1 Ω or less
- Disconnect the ecu connector, check the ground terminals on the ecu side and wire harness side for bends and check the contact pressure.
Other materials:
Replacement
1. Drain engine oil
remove the oil pan drain plug and drain the engine oil.
2. Removal & installation chain sub–assy
3. Remove chain vibration damper no.1
remove 2 bolts and chain vibration damper no. 1.
4. Remove oil pump assy
Remove the 5 bolts.
rem ...
Washer fluid
Add washer fluid in the following situations:
● A washer does not work.
● Vehicles without a multi-information display: The low windshield washer fluid
warning light (if equipped) comes on.
● Vehicles with a multi-information display: The warning message (if equipped) appear ...
Engine hood/door
Preparation
Sst
Recomended tools
Equipment
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