Toyota Corolla (E120) 2002–2008 Repair Manual / Communication system
Toyota Corolla (E120): Communication system
Horn system
Location
Problem symptoms table
Inspection
1. Inspect low pitched horn assy
- Connect the positive (+) lead from the battery to the terminal and the negative (–) lead to the horn body, and check that the horn blows.
If the result is not as specified, replace the horn.
2. Inspect horn relay assy (marking: horn)
- Remove the horn relay from the engine room j/b.
- inspect the horn relay continuity.
Standard:
If the result is not as specified, replace the relay.
Other materials:
Diagnosis system
Description
when troubleshooting obd ii vehicles, the only difference
from the usual troubleshooting procedure
is that you need to connect an obd ii scan tool complying
with sae j1987 or a hand–held tester to the
vehicle, and read off various data output from the
vehicle†...
Replacement
Hint: components:
1. Precaution
2. Disconnect battery negative terminal
3. Remove air bag front rh sensor
Disconnect the connector from the airbag front rh sensor.
remove the 2 bolts and airbag front rh sensor.
4. Inspect air bag front rh sensor
5. Install air bag front rh ...
Circuit description
If the engine coolant temperature (ect) does not reach 75°c (167°f) despite
sufficient warm – up time has
elapsed.
Dtc no
Dtc detection condition
Trouble area
P0128
Condition (a), (b) and (c):
cold start
after engine is warmed up
& ...