Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Toyota vehicle intrusion protection system / Horn relay circuit / Inspection procedure
Toyota Corolla (E120): Inspection procedure
1 Check low pitched horn assy
- Connect the positive (+) lead from the battery to the terminal and negative (–) lead to the horn body, and check that the horn blows.
2 Check relay (marking: horn)
- Remove the relay from the engine room j/b.
- check the horn relay continuity, as shown in the illustration and table.
Standard:
3 Check wire harness (tvip ecu engine room j/b)
- Remove the horn relay from the engine room j/b.
- check the continuity between the terminals of the tvip ecu and engine room j/b connectors, as shown in the illustration and table.
Standard:
*: Horn relay terminal
4 Check wire harness (engine room j/b horn)
- Check the continuity between the terminals of the engine room j/b and horn connectors, as shown in the illustration and table.
Standard:
*: Horn relay terminal.
Check and replace tvip ecu
Other materials:
Floor shift parking lock cable assy (atm)
Replacement
1. Precaution
2. Disconnect battery negative terminal
3. Place front wheels facing straight ahead
4. Remove horn button assy
5. Remove steering wheel assy
sst 09950–50013 (09951–05010, 09952–05010, 09953–05020, 09954–05021)
6. Remove steering column cover
7. Remove c ...
Inspection procedure
Hint:
read freeze frame data using the hand-held tester or the obd ii scan tool.
Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, it is
useful for determining whether
the vehicle was running or stopped, the engine was warmed up or not, the ...
USB Port/AUX Port
Connect an iPod, USB memory device or portable audio player to the USB/AUX
port as indicated below. Select “iPod”, “USB” or “AUX” on the audio source selection
screen and the device can be operated via multimedia system.
Connecting using the USB/AUX port
■ iPod
Open the cove ...