Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Toyota vehicle intrusion protection system / Ecu power source circuit
Toyota Corolla (E120): Ecu power source circuit
Circuit description
This circuit provides power to operate the tvip ecu.
Wiring diagram
Inspection procedure
1 Check fuse (ecu–b)
- Remove the fuse from the instrument panel j/b.
- check the continuity of the fuse.
Standard: continuity
2 Check tvip ecu
- Disconnect the tvip ecu connector.
- measure the voltage between the terminals of the ecu connector, as shown in the illustration and table.
Standard:
3 Check wire harness (tvip ecu body ground)
- Disconnect the tvip ecu connector.
- check the connector on the harness side, as shown in the illustration and table.
Standard:
Check and replace tvip ecu
Other materials:
Shift solenoid ”a” performance
(shift solenoid valve s1)
Dtc p0751 shift solenoid ”a” performance
(shift solenoid valve s1)
System description
The ecm uses signals from the vehicle speed sensor and crankshaft position
sensor to detect the actual
gear position (1st, 2nd, 3rd or o/d gear).
Then the ecm compares the actual gear with the shift sc ...
Listening to an iPod
Connecting an iPod enables you to enjoy music from the vehicle speakers.
Select “iPod” on the audio source selection screen.
When the iPod connected to the system includes iPod video, the system can only
output the sound by selecting the browse screen.
Connecting an iPod
Audio control scre ...
Inspection procedure
1 Check d squib circuit(airbag sensor assy center – horn button
assy)
Disconnect the negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
disconnect the connectors between the horn button assy
and the airbag sensor assy center.
for the oran ...