RM36D0EC _51 Engine / Hybrid System _087036 M20C-FKS ENGINE CONTROL _0418131 SFI SYSTEM C

M20C-FKS ENGINE CONTROL  SFI SYSTEM  P253314  Ignition Switch On/Start Position Circuit Low Circuit Short to Ground or Open  


DESCRIPTION

When the ignition switch is turned to ON, the battery power source is supplied to the IGP and IGR terminals of the ECM. When the ignition switch is off, the battery power source is cut off.

When the ignition switch is turned off during driving, the battery power source supplied to the IGP terminal is cut off. However, the battery power source supplied to the IGR terminal is supplied until the vehicle is stopped*1 or until the vehicle is stopped and the ignition switch is turned off*2.

*1: w/o Entry and Start System

*2: w/ Entry and Start System

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P253314 Ignition Switch On/Start Position Circuit Low Circuit Short to Ground or Open Short to ground or open in IGR terminal circuit (2 trip detection logic).
·

IGR NO. 1 RELAY (instrument panel junction block assembly)

·

Wire harness or connector

·

ECM


- DTC stored SAE: P2534

MONITOR DESCRIPTION

The ECM stores a DTC when there is no battery voltage to the IGR terminal even though there is battery voltage to the IGP terminal.

WIRING DIAGRAM

A562513E02
0.573,4.365 1.729,4.594 1.156,0.229 10 false INP STD NO. 1-3 5.948,1.583 6.344,1.75 0.396,0.167 10 false A126 5.74,0.625 5.938,0.802 0.198,0.177 10 false 24 5.74,1.031 5.938,1.208 0.198,0.177 10 false 11 6.021,0.74 6.448,0.927 0.427,0.188 10 false IGPD 6.021,1.156 6.448,1.344 0.427,0.188 10 false IGRD 5.938,1.75 7.031,2.313 1.094,0.563 10 false Certification ECU (smart key ECU assembly)*1 5.729,2.833 5.927,3.052 0.198,0.219 10 false 33 5.74,4.531 5.948,4.75 0.208,0.219 10 false 30 5.75,5.042 5.969,5.26 0.219,0.219 10 false 22 6.031,2.979 6.458,3.167 0.427,0.188 10 false IGR 6.052,4.688 6.479,4.875 0.427,0.188 10 false IGP 6.042,5.188 6.469,5.375 0.427,0.188 10 false E1 6.26,5.729 6.688,5.917 0.427,0.188 10 false A125 6.25,5.896 6.677,6.083 0.427,0.188 10 false ECM 0.719,5.844 1.417,6.094 0.698,0.25 10 false Battery 3.708,5.448 4.104,5.76 0.396,0.313 10 false IGP 3.5,3.792 4.198,4.042 0.698,0.25 10 false IGR NO. 1 4.49,4.823 5.094,5.292 0.604,0.469 10 false ECU-IGP NO. 1 4.385,3.135 5,3.5 0.615,0.365 10 false ENG-IGR NO. 1 3.344,4.531 3.51,4.75 0.167,0.219 10 false 5 4.208,4.552 4.375,4.771 0.167,0.219 10 false 3 5.094,2.781 5.323,2.979 0.229,0.198 10 false 22 3.344,4.969 3.51,5.188 0.167,0.219 10 false 1 4.208,4.969 4.375,5.188 0.167,0.219 10 false 2 2.729,4.188 5.448,4.5 2.719,0.313 10 false Instrument Panel Junction Block Assembly 1.198,4.833 1.896,5.083 0.698,0.25 10 false IGP 0.688,1.063 1.115,1.25 0.427,0.188 10 false G28 0.677,1.229 2.521,1.542 1.844,0.313 10 false Ignition Switch Assembly*2 1,0.615 1.417,0.875 0.417,0.26 10 false AM1 1.583,0.625 2,0.885 0.417,0.26 10 false IG1 0.771,0.615 0.938,0.833 0.167,0.219 10 false 7 1.979,0.604 2.146,0.823 0.167,0.219 10 false 8 1.448,6.073 3.75,6.385 2.302,0.313 10 false *1: w/ Entry and Start System 1.448,6.417 3.75,6.729 2.302,0.313 10 false *2: w/o Entry and Start System 2.396,0.604 2.563,0.823 0.167,0.219 10 false *2 4.479,1.01 4.646,1.229 0.167,0.219 10 false *1 4.458,0.594 4.625,0.813 0.167,0.219 10 false *1 0.552,3.323 0.969,3.583 0.417,0.26 10 false AM2 5.083,2.979 5.313,3.177 0.229,0.198 10 false 6E 5.094,3.271 5.323,3.469 0.229,0.198 10 false 36 5.094,3.656 5.323,3.854 0.229,0.198 10 false 41 5.083,3.469 5.313,3.667 0.229,0.198 10 false 6B 5.073,3.833 5.302,4.031 0.229,0.198 10 false 6C 2.51,3.938 2.74,4.135 0.229,0.198 10 false 6E 2.229,3.938 2.458,4.135 0.229,0.198 10 false 13 0.385,3.938 0.615,4.135 0.229,0.198 10 false 6K 0.198,3.927 0.427,4.125 0.229,0.198 10 false 1 0.396,2.177 0.625,2.375 0.229,0.198 10 false 6B 0.219,2.167 0.448,2.365 0.229,0.198 10 false 9 2.51,2.167 2.74,2.365 0.229,0.198 10 false 6C 2.219,2.177 2.448,2.375 0.229,0.198 10 false 17 3.125,2.167 3.354,2.365 0.229,0.198 10 false 6B 2.844,2.167 3.073,2.365 0.229,0.198 10 false 11 1.688,2.552 1.917,2.75 0.229,0.198 10 false IC

CONFIRMATION DRIVING PATTERN

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

5.

Turn the ignition switch off and wait for at least 30 seconds.

6.

Turn the ignition switch to ON.

7.

Turn the GTS on.

8.

Wait 1 minute or more.

9.

Enter the following menus: Powertrain / Engine / Trouble Codes.

10.

Read the pending DTCs.

HINT:
·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.



11.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

12.

Input the DTC: P253314

13.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System normal


ABNORMAL
·

DTC judgment completed

·

System abnormal


INCOMPLETE
·

DTC judgment not completed

·

Perform driving pattern after confirming DTC enabling conditions



HINT:
·

If the judgment result shows NORMAL, the system is normal.

·

If the judgment result shows ABNORMAL, the system is malfunctioning.




CAUTION / NOTICE / HINT

HINT:

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.


PROCEDURE

1.READ VALUE USING GTS (IGR)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / IGR.

Powertrain > Engine > Data List
Tester Display
IGR
50003 372 1232

e.

Read the Data List.

Result:
Result Proceed to
The value of IGR is ON A
None of the above conditions are met B




A

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS


B

2.CHECK TERMINAL VOLTAGE (IGR VOLTAGE)
2.CHECK TERMINAL VOLTAGE (IGR VOLTAGE)
A534801C27
1.635,0.333 2.021,0.563 0.385,0.229 0.75,2.927 1.344,1.583 true 0.115,0.104 0.427,0.302 0.313,0.198 10 false *a 0.615,2.948 1.115,3.156 0.5,0.208 10 false IGR 1.677,0.365 2.135,0.604 0.458,0.24 10 false A125
*a Front view of wire harness connector
(to ECM)


a.

Disconnect the ECM connector.


b.

Turn the ignition switch to ON.


c.

Measure the voltage according to the value(s) in the table below.

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A125-33 (IGR) - Body ground Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>M20C-FKS (ENGINE CONTROL)>ECM>REMOVAL


NG

3.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECM)
3.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECM)
a.

Disconnect the ECM connector.


b.

Disconnect the instrument panel junction block assembly connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
6E-22 - A125-33 (IGR) Always Below 1 Ω
6E-22 or A125-33 (IGR) - Body ground and other terminals Always 10 kΩ or higher


Result:
Proceed to
OK
NG




OK

4.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND)
a.

Disconnect the instrument panel junction block assembly connector.


b.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
6B-36 - Body ground Always Below 1 Ω
6C-41 - Body ground Always Below 1 Ω


Result:
Proceed to
OK
NG




OK

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR