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:
Inspection
1. Spark plug
Notice:
never use a wire brush for cleaning.
Never attempt to adjust the electrode gap on used
spark plug.
Spark plug should be replaced every 192,000 km
(120,000 miles).
Clean the spark plugs.
Air pressure: below 588 kpa (6.0 Kg/cm2, 85 psi)
duration: 20 sec ...
Driving support system
information display
■ Driving support system
information
Select to display the operational
status of the following systems:
Dynamic radar cruise control
LTA (Lane Tracing Assist)
LDA (Lane Departure Alert)
■ Navigation system-linked
display (if equipped)
Select to display the following
navigation system-linked ...
If the vehicle becomes stuck
Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt or snow:
1 Stop the engine. Set the parking brake and shift the shift lever to P (automatic
transmission or continuously variable transmission) or N (manual transmission).
2 Remove the mud, snow or s ...