Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Supplemental restraint system / Tc terminal circuit / Circuit description
Toyota Corolla (E120): Circuit description
Dtc output mode is set by connecting between tc and cg of the dlc3.
The dtcs are displayed by blinking the srs warning light.
Wiring diagram

Hint
: when each warning light stays blinking, ground short in the wiring until the terminal tc of the dlc3 or internal ground short in each ecu is suspected.
Other materials:
Customer problem analysis
Hint:
in troubleshooting, the problem symptoms must be confirmed
accurately, meaning that all preconceptions
must be set aside in order to make an accurate judgement. To ascertain what
the problem symptoms
are, it is extremely important to ask the customer about the problem and
cond ...
No sound is heard from speaker in all modes
Wiring diagram
Inspection procedure
1 Check lcd (liquid crystal display) for lighting
Lcd illumination check
turn the ignition switch acc.
Turn the radio receiver assembly on.
Standard: lcd illumination of the radio receiver assembly light.
2 Control fader and ...
Evap monitor (vacuum pressure monitor) (continued)
Preconditions
The monitor will not run unless:
mil is off.
Fuel level is approximately 1/2 to 3/4.
Altitude is 7800 feet (2400 m) or less.*
Engine coolant temperature (ect) is between 40°f and 95°f (4.4 °C and 35
°C).
Intake air temperature (iat) is between 40°f and 95 ...


