Diagnosis System
DIAGNOSIS SYSTEM1. DIAGNOSTIC SYSTEM
(a) Inspect the battery voltage.
Battery voltage: 11 to 14 V
If voltage is below 11 V, recharge the battery before proceeding.
2. Check the DLC3
(a) The ECU uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.
NOTICE:
*: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors.
(b) If the result is not as specified, DLC3 may have a malfunction. Repair or replace the harness and connector.
HINT:
Connect the cable of the intelligent tester to DLC3, turn the ignition switch to the ON position and attempt to use the tester. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the tester.
- If communication is normal when the tester is connected to another vehicle, inspect DLC3 of the original vehicle.
- If communication is still not possible when the tester is connected to another vehicle, the problem may be in the tester itself. Consult the Service Department listed in the tester's instruction manual.
3. CHECK WARNING LIGHT
(a) Turn the ignition switch to the LOCK position.
(b) When the ignition switch is turned to the ON position, the light should come on for 3 to 4 seconds and then go off.
HINT: If the tire pressure warning light has a defect, check the tire pressure warning light output patterns and the problem symptoms table. Symptom Related Diagnostic Procedures
4. TIRE PRESSURE WARNING LIGHT CHART:
Part 1:
Part 2:
HINT: When the skid control ECU does not operate properly, the ABS warning light comes on as an ABS system malfunction.