Counter System

DIAGNOSIS SYSTEM (TCM)

DIAGNOSIS DESCRIPTION : Counter System


RELATION BETWEEN DTC AT 1ST TRIP/DTC/MIL AND DRIVING CONDITIONS (FOR 2 TRIP DETECTION DIAGNOSIS THAT ILLUMINATES MIL)

- When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage.
- If the same malfunction is detected at the 2nd trip, TCM memorizes DTC and MIL lights at the same time.
- Then, MIL goes after driving the vehicle for 3 trips under "Driving condition B" without malfunction.
- DTC is displayed until 40 trips of "Driving condition A" are satisfied without detecting the same malfunction.
DTC is erased when 40 trips are satisfied.
- When the self-diagnosis result is acceptable at the 2nd trip (conforming to driving condition B), DTC of the
1st trip is erased.

COUNTER SYSTEM LIST







DRIVING CONDITION

Driving condition A
Driving condition A is the driving condition that provides warm-up.
In specific, count-up is performed when all of the following conditions are satisfied.
- Engine speed is 400 rpm or more.
- After start of the engine, the water temperature increased by 20�C (36�F) or more.
- Water temperature was 70�C (158�F) or more.
- The ignition switch was changed from ON to OFF.
NOTE:
- If the same malfunction is detected regardless of the driving condition, reset the A counter.
- When the above is satisfied without detecting the same malfunction, count up the A counter.
- When MIL goes off due to the malfunction and the A counter reaches 40, the DTC is erased.
Driving condition B
Driving condition B is the driving condition that performs all diagnoses once.
In specific, count-up is performed when all of the following conditions are satisfied.
- Engine speed is 400 rpm or more.
- Water temperature was 70�C (158�F) or more.
- In closed loop control, vehicle speed of 70 - 120 km/h (43 - 75 MPH) continued for 60 seconds or more.
- In closed loop control, vehicle speed of 30 - 60 km/h (19 - 37 MPH) continued for 10 seconds or more.
- In closed loop control, vehicle speed of 4 km/h (2 MPH) or less and idle determination ON continued for 12
seconds or more.
- After start of the engine, 22 minutes or more have passed.
- The condition that the vehicle speed is 10 km/h (6 MPH) or more continued for 10 seconds or more in total.
- The ignition switch was changed from ON to OFF.
NOTE:
- If the same malfunction is detected regardless of the driving condition, reset the B counter.
- When the above is satisfied without detecting the same malfunction, count up the B counter.
- When the B counter reaches 3 without malfunction, MIL goes off.
- When the B counter is counted once without detecting the same malfunction after TCM memorizes DTC of the 1st trip, DTC of the 1st trip is erased.

TIME CHART