TCM Self-Diagnostic Procedure (No Tools)

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

Description

When the ignition switch is switched "ON", the A/T CHECK indicator lamp lights up for 2 seconds. As a method for locating the suspect circuit, when the self-diagnostics start signal is input, the memory for the malfunction location is output and the A/T CHECK indicator lamp flashes to display the corresponding DTC.

Diagnostic Procedure

CHECK A/T CHECK INDICATOR LAMP
1. Start the engine with selector lever in "P" position. Warm engine to normal operating temperature.
2. Turn ignition switch ON and OFF at least twice, then leave it in the OFF position.
3. Wait 10 seconds.
4. Turn ignition switch ON. (Never start engine.)
Does A/T CHECK indicator lamp come on for about 2 seconds?

YES

GO TO 2.

NO

Go to Symptom Table .
JUDGMENT PROCEDURE STEP 1
1. Turn ignition switch OFF.
2. Keep pressing shift lock release button.
3. Move selector lever from "P" to "D" position.
4. Release accelerator pedal. (Set the closed throttle position signal "ON".)
5. Depress brake pedal. (Stop lamp switch signal "ON".)
6. Turn ignition switch ON. (Never start engine.)
7. Wait 3 seconds.
8. Press the manual mode switch. (Manual mode "ON".)
9. Release brake pedal. (Stop lamp switch signal "OFF".)
10. Press the manual mode switch. (Manual mode "OFF".)
11. Depress brake pedal. (Stop lamp switch signal "ON".)
12. Release brake pedal. (Stop lamp switch signal "OFF".)
13. Depress accelerator pedal fully and release it.
GO TO 3.
CHECK SELF-DIAGNOSIS CODE
Check A/T CHECK indicator lamp.

Refer to "Judgment Self-diagnosis Code".

If the system does not go into self-diagnostics, refer to;

Refer to Diagnosis Procedure .

Refer to Diagnosis Procedure .

Refer to DTC Diagnosis Procedure .

Refer to DTC Diagnosis Procedure .

DIAGNOSIS END

Judgment Self-diagnosis Code

If there is a malfunction, the lamp lights up for the time corresponding to the suspect circuit.

Courtesy of NISSAN NORTH AMERICA, INC.

No.	Malfunctioning item	No.	Malfunctioning item
1	Output speed sensor Refer to DTC Description .	12	Interlock Refer to DTC Description .
2	Direct clutch solenoid Refer to DTC Description .	13	1st engine braking Refer to DTC Description .
3	Torque converter Refer to DTC Description , DTC Description .	14	Starter relay Refer to DTC Description .
4	Line pressure solenoid Refer to DTC Description .	15	TP sensor Refer to DTC Description .
5	Input clutch solenoid Refer to DTC Description .	16	Engine speed Refer to DTC Description .
6	Front brake solenoid Refer to DTC Description .	17	CAN communication line Refer to DTC Description .
7	Low coast brake solenoid Refer to DTC Description , DTC Description .	18	1GR incorrect ratio Refer to DTC Description .
8	High and low reverse clutch solenoid Refer to DTC Description .	19	2GR incorrect ratio Refer to DTC Description .
9	Transmission range switch Refer to DTC Description .	20	3GR incorrect ratio Refer to DTC Description .
10	Transmission fluid temperature sensor Refer to DTC Description . Refer to DTC Description . Refer to DTC Description .	21	4GR incorrect ratio Refer to DTC Description .
11	Input speed sensor Refer to DTC Description .	22	5GR incorrect ratio Refer to DTC Description .

Erase Self-diagnosis

In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is stored into the control unit as necessary during use by the user. This memory is not erased no matter how many times the ignition switch is turned ON and OFF.
However, this information is erased by turning ignition switch OFF after executing self-diagnostics or by erasing the memory using the CONSULT.