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
Self-diagnosis name
DTC detection condition
Possible cause
P0700
ECM receiving malfunction
A
A DTC is set if TCM cannot receive the CAN communication signals from ECM for 2 seconds or more.
  • ECM
  • Harness or connector
    (CAN communication line is open or shorted)
Receiving of malfunctioning engine torque signal
B
A DTC is set if abnormal engine torque signal is received from ECM.
ECM
Receiving of malfunctioning engine speed signal
C
A DTC is set if abnormal engine speed signal is received from ECM.
Sensor power supply voltage
D
A DTC is set if TCM detects DTC P0720 and DTC P0872.
  • TCM
  • Harness or connector
    (Open in the TCM ground circuit)
TCM internal*
E
A DTC is set if TCM computing unit does not operate normally.
TCM
F
A DTC is set if TCM monitor unit does not operate normally.
G
A DTC is set if TCM function unit does not operate normally.
H
A DTC is set if TCM self-shutoff does not operate normally.
*: A DTC is displayed when E, F, G or H in the DTC detection conditions is detected.

 
 DTC CONFIRMATION PROCEDURE

 
 1.PREPARATION BEFORE OPERATION
 
 2.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION A, B
 
 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
 
 6.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION F
 
 7.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION G
 
 8.PERFORM DTC CONFIRMATION PROCEDURE — DTC DETECTION CONDITION H