Reading and Clearing Diagnostic Trouble Codes

TROUBLE DIAGNOSIS


Diagnosis Procedure without CONSULT-III


OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)
Refer to Diagnosis Tool Function (for VQ35HR engine), (for VK45DE engine).

OBD-II SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
Refer to Diagnosis Description (for VQ35HR engine), Malfunction Indicator Lamp(for VK45DE engine).

TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)

Description
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.

Operation Procedure
1.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. (Do not start engine.)
Does A/T CHECK indicator lamp come on for about 2 seconds?
YES - GO TO 2.
NO - GO TO A/T Check Indicator Lamp Does Not Come On.
2.JUDGMENT PROCEDURE
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.
7. Wait 3 seconds.
8. Move the selector lever to the manual shift gate side. (Manual mode signal ON.)
9. Release brake pedal. (Stop lamp switch signal OFF.)
10. Move the selector lever to "D" position. (Manual mode signal 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.
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 5AT RE5R05A 5AT RE5R05A 5AT RE5R05A 5AT RE5R05A 5AT RE5R05A, Consult-III Reference Value In Data Monitor Mode Diagnosis Procedure, 5AT RE5R05A 5AT RE5R05A 5AT RE5R05A 5AT RE5R05A 5AT RE5R05A, Consult-III Reference Value In Data Monitor Mode 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.









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 performing self-diagnostics or by erasing the memory using the CONSULT-III.