Nissan Juke Service and Repair Manual : Diagnosis system (TCM)

Diagnosis description : 1 Trip Detection Diagnosis and 2 Trip Detection Diagnosis

NOTE

:
“Start the engine and turn OFF the ignition switch after warm-up.” This is defined as 1 trip.

1 TRIP DETECTION DIAGNOSIS

When initial malfunction is detected, TCM memorizes DTC. In these diagnoses, some illuminate MIL and some do not. Refer to TM-366, "DTC Index".

2 TRIP DETECTION DIAGNOSIS

When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage. <1 trip> If the same malfunction is detected again in next driving, TCM memorizes DTC. When DTC is memorized, MIL lights. <2 trip> “Trip” of the “2 trip detection diagnosis” indicates the driving mode that executes self-diagnosis during driving.

Diagnosis description : DTC and DTC of 1st Trip


Diagnosis description : DTC and DTC of 1st Trip

2 TRIP DETECTION DIAGNOSIS THAT ILLUMINATES MIL

• The DTC number of the 1st trip is the same as the DTC number.

• When a malfunction is detected at the 1st trip, TCM memorizes DTC of the 1st trip. MIL does not light at this stage. If the same malfunction is not detected at the 2nd trip (conforming to necessary driving conditions), DTC at the 1st trip is erased from TCM. If the same malfunction is detected at the 2nd trip, TCM memorizes DTC and MIL lights at the same time.

• The DTC of the 1st trip is specified in Service $01 of SAE J1979/ISO 15031-5. Since detection of DTC at the 1st trip does not illuminate MIL, warning for a problem is not given to a driver.

• For procedure to delete DTC and 1st trip DTC from TCM, refer to TM-347, "CONSULT-III Function (TRANSMISSION)".

• If DTC of the 1st trip is detected, it is necessary to check the cause according to the “Diagnosis flow”. Refer to TM-371, "Flowchart of Trouble Diagnosis".

Diagnosis description : Malfunction Indicator Lamp (MIL)

• TCM not only detects DTC, but also sends the MIL signal to ECM through CAN communication. ECM sends the MIL signal to the combination meter through CAN communication according to the signal, and illuminates MIL.

• For malfunction indicator lamp (MIL) description, refer to EC-466, "Malfunction Indicator

Diagnosis description : Counter Syst

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

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 10km/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

CONSULT-III Function (transmission)


CONSULT-III Function (transmission)

APPLICABLE ITEM


*: “Function Test” can be selected, but do not use it.


*: “Function Test” can be selected, but do not use it.

SELF DIAGNOSTIC RESULTS

Display Item List
Refer to TM-366, "DTC Index".

DTC at 1st trip and method to read DTC • DTC (P0705, P0711, P0720, etc.) is specified by SAE J2012/ISO 15031-6.

• DTC and DTC at 1st trip are displayed on “Self Diagnostic results” of CONSULT-III. “ Timing” shows current malfunction or malfunction in the past.

If current DTC is detected, “timing” is “present”. If the “timing” is “memorized”, it is the malfunction occurred in the past. According to “ignition counter” in “FFD”, the number (trip) of operation without malfunction of the DTC can be checked.

• When the DTC at the 1st trip is detected, the “timing” is displayed as “1t”.

DTC deletion method NOTE

:
• If the battery terminal is disconnected, the TCM memory is erased. (The disconnection time varies from several seconds to several hours.

• If the ignition switch is left ON after repair, turn OFF the ignition switch and wait for 10 seconds or more.

Then, turn the ignition ON again. (Engine stop) 1. Touch "TRANSMISSION" of CONSULT-III.

2. Touch “Self Diagnostic Result”.

3. Touch “Erase”. (DTC memorized in TCM is erased.) IGN counter
The ignition counter is displayed in “FFD” and the number of times of satisfied "Driving condition A" is displayed after normal recovery of DTC. Refer to TM-345, "DIAGNOSIS DESCRIPTION : Counter System".

• If malfunction (DTC) is currently detected, “0” is displayed.

• After normal recovery, every time "Driving condition A" is satisfied, the display value increases from 1 → 2 → 3...38 → 39.

• When MIL turns OFF due to the malfunction and the counter reaches 40, the DTC is erased.

NOTE

:
The counter display of “40” cannot be checked.

DATA MONITOR





WORK SUPPORT


WORK SUPPORT

*: “Clutch point learning” can be selected, but do not use it.


*: “Clutch point learning” can be selected, but do not use it.

Engine brake adjustment

ENGINE BRAKE LEVEL
ON : Turn ON the engine brake control.

OFF : Turn OFF the engine brake control.

Check the degradation level of the CVT fluid

CVTF degradation level data 210,000 or more : Replacement of the CVT fluid is required.

Less than 210,000 : Replacement of the CVT fluid is not required.

SPECIAL FUNCTION

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