Warning: Warning signals and fault codes can only be read when the overdrive switch is in the "ON". If the switch is in position "OFF", the indicator lamp lights up without blinking.
A) If a malfunction occurs in the speed sensor, throttle position sensor or solenoid valves, the indicator will flash to alert the driver to the malfunction. But if there is a malfunction in the interlock solenoid valve and the interlock quality control solenoid valve, there will be no malfunction warning.
b) Fault codes can be read by the number of flashes of the overdrive indicator, for this you need to short the outputs "THOSE1" And "E1" diagnostic socket.
V) The diagnostic system does not determine the failure of the throttle position sensor and brake light switch, but they can be checked by measuring the voltage at the output "TT" diagnostic socket.
2. The fault code is stored in the memory of the control unit even after the engine is turned off. Clearing the memory in the block (reset codes after repair) done either by turning off the ignition and disconnecting the fuse "EFI", or by disconnecting the connector of the automatic transmission and engine control unit.
A245E (4A-FE, 5A-FE, 7A-FE)
A241E (4S-FE), A540N (since 1994)
A540H (4S-FE), A540N (until 1994)
Attention:
- - low battery voltage may cause diagnostic failure. Therefore, before starting diagnostics, check the battery.
- - use a voltmeter or ohmmeter that has a scale limit of at least 10 kΩ/V.