Nissan Altima 2007-2012 Service Manual: P0826 manual mode switch

Description

Manual mode switch is installed in CVT control device. The manual mode switch sends shift up and shift down switch signals to TCM.

TCM sends the switch signals to combination meter via CAN communication line. Then manual mode switch position is indicated on the CVT position indicator.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION: Always drive vehicle at a safe speed.

NOTE: If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF.

Then wait at least 10 seconds before performing the next test.

1.CHECK DTC DETECTION

1. Turn ignition switch ON.

2. Select “DATA MONITOR”.

3. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds.

MMODE : On

Is “P0826 MANUAL MODE SWITCH” detected? YES >> Go to TM-157, "Diagnosis Procedure".

NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".

Diagnosis Procedure

1.CHECK MANUAL MODE SWITCH SIGNALS

1. Turn ignition switch ON.

2. Select “DATA MONITOR”.

3. Check the ON/OFF operations of each monitor item.

Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of the position mutually coincide when the selector lever is shifted to the “+ (up)” or “− (down)” side (1st ⇔ 6th gear).

Is the inspection result normal? YES >> GO TO 7.

NO >> GO TO 2.

2.CHECK HARNESS BETWEEN CVT DEVICE AND COMBINATION METER (PART 1)

1. Turn ignition switch OFF.

2. Disconnect CVT device harness connector and combination meter harness connector.

3. Check continuity between CVT device harness connector M23 (A) terminal 1, 2, 3 and 5 and combination meter harness connector M24 (B) terminal 40, 38, 39 and 37.

Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace damaged parts.

3.CHECK HARNESS BETWEEN CVT DEVICE AND COMBINATION METER (PART 2)

Check continuity between CVT device harness connector M23 terminal 1, 2, 3, and 5 and ground.

Is the inspection result normal? YES >> GO TO 4.

NO >> Repair or replace damaged parts.

4.CHECK GROUND CIRCUIT (PART 1)

Check continuity between CVT device harness connector M23 terminal 4 and ground.

Is the inspection result normal? YES >> GO TO 5.

NO >> Repair or replace damaged parts.

5.CHECK GROUND CIRCUIT (PART 2)

1. Turn ignition switch ON.

2. Check voltage between CVT device harness connector M23 terminal 4 and ground.

Is the inspection result normal? YES >> GO TO 6.

NO >> Repair or replace damaged parts.

6.CHECK MANUAL MODE SWITCH

Check manual mode switch. Refer to TM-159, "Component Inspection (Manual Mode Switch)".

Is the inspection result normal? YES >> GO TO 7.

NO >> Repair or replace damaged parts.

7.DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.

Is the inspection result normal? YES >> Replace TCM. Refer to TM-254, "Exploded View".

NO >> Repair or replace damaged parts.

Component Inspection (Manual Mode Switch)

1.CHECK MANUAL MODE SWITCH

Check continuity between CVT device terminals.

Is the inspection result normal? YES >> INSPECTION END

NO >> Repair or replace damaged parts.

    P0778 pressure control solenoid B electrical (sec pressure solenoid valve)
    Description The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the ...

    P0840 transmission fluid pressure sensor A (sec pressure sensor)
    Description The transmission fluid pressure sensor A (secondary pressure sensor) detects secondary pressure of CVT and sends TCM the signal. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PRO ...

    Other materials:

    ASCD Indicator
    Description The ASCD operation status is indicated by two indicators, (CRUISE and SET on the information display) on the combination meter. CRUISE indicator is displayed to indicate that ASCD system is ready for operation when MAIN switch on ASCD steering switch is turned ON. SET indica ...

    P0139 HO2S2
    Description The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the air fuel ratio (A/F) sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from th ...

    Readiness for inspection/maintenance (I/M) test
    Due to legal requirements in some states and Canadian Provinces, your vehicle may be required to be in what is called the “ready condition” for an Inspection/Maintenance (I/M) test of the emission control system. The vehicle is set to the “ready condition” when it is driven through c ...