DESCRIPTIONS
TOD control unit starts self-diagnostic function after the ignition is switched ON.
If TOD control unit detects failure for each circuit and component by comparing condition of the system with limited condition set inside TOD control unit, TOD control unit stores the failure code.
The failure code stored in TOD control unit can be confirmed by scan tool and then outputs the four-digit code to the scan tool when the scan tool is connected to TOD data link connector in the engine room.
Refer to SELF-DIAGNOSIS PROCEDURE FOR TOD (AUTO) .
Scheme 1
Scheme 2
Scheme 3
Scheme 4
Scheme 5
Scheme 6
Scheme 7
Scheme 8
Scheme 9
Scheme 10
Scheme 11
Scheme 12
Scheme 13
Scheme 14
Scheme 15
Scheme 16
Scheme 17
Scheme 18
Scheme 19
Scheme 20
Note. With the connector connected when the IGN is ON, do not operate the switches while measuring resistance or the continuity test corresponding to the connector. If the switches are operated, be careful that the tester may be damaged or injured due to excessive current in the connector momentarily.
