Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Toyota vehicle intrusion protection system / Ignition switch circuit / Inspection procedure
Toyota Corolla (E120): Inspection procedure
1 Check ignition or starter switch assy
- Check the ignition switch, as shown in the illustration and table.
Standard:
2 Check fuse (ecu–b)
- Remove the fuse from the instrument panel j/b.
- check the continuity of the fuse.
Standard: continuity
3 Check relay (marking: ig1)
- Remove the relay from the instrument j/b.
- inspect the relay continuity, as shown in the illustration and table.
Standard:
4 Check tvip ecu
- Disconnect the tvip ecu connector.
- turn the ignition switch on.
- measure the voltage between the terminal of the ecu connector and the body ground, as shown in the illustration and table.
Standard:
Check and replace tvip ecu
Other materials:
Inspection procedure
Hint:
if dtc p0441 (purge flow), p0446 (vsv for ccv or vsv for pressure
switching valve), p0451, p0452
or p0453 is output with dtc p0442 or p0456 , first troubleshoot
dtc p0441, p0446, p0451, p0452 or p0453. If no malfunction is detected,
troubleshoot dtc
p0442 or p0456 next.
...
Symptom simulation
Hint:
the most difficult case in troubleshooting is when no symptoms occurs. In such
cases, a thorough customer
problem analysis must be carried out. Then the same or similar conditions and
environment in which the
problem occurred in the customer’s vehicle should be simulated. No matter ho ...
Using the steering wheel switches
The steering wheel switches can be used to operate a connected cellular phone.
Operating a telephone using the steering wheel switches
■ Steering wheel switches on the right hand side
1 Off hook switch
• Make a call
• Receive a call
• Display “Phone” screen
2 On hook switch
...