P0790 SET-UP SWITCH (TRANSMISSION)

TRANSMISSION: GR6Z30A

P0790

Description

The set-up switch (transmission) is installed on the cluster lid C and commands the driving mode transition to TCM according to a driver's request.

DTC DETECTION LOGIC

DTC	Self-diagnosis name	DTC detection condition	Possible cause
P0790	Continuation of set-up switch (transmission) ON	A DTC is set if TCM detects the set-up switch (transmission) ON signal for a certain period of time.	Set-up switch (transmission) Harness or connector [Short in the set-up switch (transmission) circuit]

DTC CONFIRMATION PROCEDURE

1.CHECK BEFORE OPERATION

2.PERFORM DTC CONFIRMATION PROCEDURE

1.CHECK GROUND CONNECTION

2.CHECK SET-UP SWITCH (TRANSMISSION)

3.CHECK HARNESS BETWEEN TCM AND SET-UP SWITCH (TRANSMISSION)

4.CHECK HARNESS BETWEEN SET-UP SWITCH (TRANSMISSION) AND GROUND

5.CHECK INTERMITTENT INCIDENT

1.CHECK SET-UP SWITCH (TRANSMISSION)

TCM vehicle side harness connector		Ground	Continuity
Connector	Terminal
B45	34	Ground	Not existed
	37

Set-up switch (transmission) vehicle side harness connector		Ground	Continuity
Connector	Terminal
M73	17	Ground	Existed

Set-up switch (transmission) connector			Condition	Continuity
Connector	Terminal
M73	11	17	With the knob of the set-up switch (transmission) pressed onto the R side	Existed
			Other than the above	Not existed
	23		With the knob of the set-up switch (transmission) pressed onto the SNOW side	Existed
			Other than the above	Not existed