 DTC DETECTION LOGIC
■ CAUTION ■
- Before TCM is replaced, the IP characteristics must be extracted, based on the information read out from the malfunctioning TCM. For reading out the IP characteristic data, refer to “CONSULT-III GT-R TCM CONFIGURATION MANUAL”.
- If no IP characteristic data can be extracted TCM and the transmission assembly must be replaced as a set.
DTC
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Self-diagnosis name
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DTC detection condition
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Possible cause
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P0700
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ECM receiving malfunction
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A
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A DTC is set if TCM cannot receive the CAN communication signals from ECM for 2 seconds or more.
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- ECM
- Harness or connector
(CAN communication line is open or shorted)
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Receiving of malfunctioning engine torque signal
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B
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A DTC is set if abnormal engine torque signal is received from ECM.
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ECM
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Receiving of malfunctioning engine speed signal
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C
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A DTC is set if abnormal engine speed signal is received from ECM.
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Sensor power supply voltage
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D
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A DTC is set if TCM detects DTC P0720 and DTC P0872.
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- TCM
- Harness or connector
(Open in the TCM ground circuit)
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TCM internal*
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E
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A DTC is set if TCM computing unit does not operate normally.
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TCM
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F
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A DTC is set if TCM monitor unit does not operate normally.
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G
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A DTC is set if TCM function unit does not operate normally.
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H
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A DTC is set if TCM self-shutoff does not operate normally.
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*: A DTC is displayed when E, F, G or H in the DTC detection conditions is detected.
 DTC CONFIRMATION PROCEDURE
 1.PREPARATION BEFORE OPERATION
If another “DTC CONFIRMATION PROCEDURE” is performed just before the next test, turn the ignition switch OFF and wait for 10 seconds or more, then perform the next test. >>GO TO 2.
 2.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION A, B
 With CONSULT-III Perform “DTC CONFIRMATION PROCEDURE” for the engine DTCs P0605, P0102, P0103, P010C, and P010D.  Without CONSULT-III Perform “DTC CONFIRMATION PROCEDURE” for the engine DTCs P0605, P0102, P0103, P010C, and P010D. Is the DTC detected? YES >>Go to Diagnosis Procedure (GT-R certified NISSAN dealer). NO >>GO TO 3.
 3.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION C
 4.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION D
 5.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION E
 With CONSULT-III - Turn ignition switch ON, and wait for 10 seconds or more.
- Check “Self Diagnostic Result” of “TRANSMISSION”.
 Without CONSULT-III - Turn ignition switch ON, and wait for 10 seconds or more.
- Check self-diagnosis.
Is DTC P0700 detected? YES >>Go to Diagnosis Procedure (GT-R certified NISSAN dealer). NO >>GO TO 6.
 6.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION F
 With CONSULT-III - Turn ignition switch ON, and wait for 1 second or more.
- Turn the ignition switch OFF and wait for 5 seconds or more, then turn it ON again.
- Repeat the procedure shown in 2 above 5 times.
- Check “Self Diagnostic Result” of “TRANSMISSION”.
 Without CONSULT-III - Turn ignition switch ON, and wait for 1 second or more.
- Turn the ignition switch OFF and wait for 5 seconds or more, then turn it ON again.
- Repeat the procedure shown in 2 above 5 times.
- Check self-diagnosis.
Is DTC P0700 detected? YES >>Go to Diagnosis Procedure (GT-R certified NISSAN dealer). NO >>GO TO 7.
 7.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION G
 With CONSULT-III - Shift the shift lever as per the following: P→R→N→A→M positions (Keep the shift lever for 5 seconds or more at each position).
- Check “Self Diagnostic Result” of “TRANSMISSION”.
 Without CONSULT-III - Shift the shift lever as per the following: P→R→N→A→M positions (Keep the shift lever for 5 seconds or more at each position).
- Check self-diagnosis.
Is DTC P0700 detected? YES >>Go to Diagnosis Procedure (GT-R certified NISSAN dealer). NO >>GO TO 8.
 8.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION H
 With CONSULT-III - Turn ignition switch OFF, and wait for 5 seconds or more.
- Turn the ignition switch ON and wait for 5 seconds or more, then turn it OFF again.
- Repeat the procedure shown in 2 above 32 times.
- Turn the ignition switch ON.
- Check “Self Diagnostic Result” of “TRANSMISSION”.
 Without CONSULT-III - Turn ignition switch OFF, and wait for 5 seconds or more.
- Turn the ignition switch ON and wait for 5 seconds or more, then turn it OFF again.
- Repeat the procedure shown in 2 above 32 times.
- Turn the ignition switch ON.
- Check self-diagnosis.
Is DTC P0700 detected? YES >>Go to Diagnosis Procedure (GT-R certified NISSAN dealer). NO >>INSPECTION END
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