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:
Transmission valve body assy (atm)
Replacement
1. Remove engine under cover lh
2. Drain automatic transaxle fluid
remove the drain plug, gasket and drain atf.
install a new gasket and drain plug.
Torque: 17.5 Nvm (178 Kgf·cm, 13 ft·lbf)
3. Remove automatic transaxle oil pan sub–assy
Remove the 18 ...
Checking tires
Check if the treadwear indicators
are showing on the tires.
Also check the tires for uneven
wear, such as excessive wear
on one side of the tread.
Check the spare tire condition
and pressure if not rotated.
New tread
Worn tread
Treadwear indicator
The location of treadwear indicators
is show ...
Circuit description
The crankshaft position sensor (ne signal) consists of a magnet, iron core
and pickup coil.
The ne signal plate (crankshaft position sensor plate) has 34 teeth and is
installed on the crankshaft. The
ne signal sensor generates 34 signals for each engine revolution. This sensor
monitors a p ...