RM36D0EC _51 Engine / Hybrid System _083048 HYBRID / BATTERY CONTROL _0709511 HYBRID CONTROL SYSTEM C

HYBRID / BATTERY CONTROL  HYBRID CONTROL SYSTEM  P253314  Ignition Switch On/Start Position Circuit Low Circuit Short to Ground or Open  


DTC SUMMARY

The hybrid vehicle control ECU stores a DTC when there is no auxiliary battery voltage to the IGR terminal even though there is auxiliary battery voltage to the IGP terminal.

DESCRIPTION

When the ignition switch is turned to ON, the auxiliary battery power source is supplied to the IGP and IGR terminals of the hybrid vehicle control ECU. When the ignition switch is off, the auxiliary battery power source is cut off.

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

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate 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)
·

Instrument panel junction block

·

Wire harness or connector

·

Hybrid vehicle control ECU


Does not come on Master Warning: Does not come on SAE Code:
P2534

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>UTILITY


1.

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

2.

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

3.

Turn the ignition switch ON (READY) and wait for 1 minutes or more.

4.

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

5.

Check the DTC judgment result.

HINT:
·

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

·

If the judgment result shows ABNORMAL, the system has a malfunction.

·

If the judgment result shows INCOMPLETE, perform driving pattern again.




WIRING DIAGRAM

A550303E05
0.521,6.75 2.115,7.125 1.594,0.375 10 false Auxiliary Battery 0.365,6.052 1.24,6.26 0.875,0.208 10 false MAIN 6.292,6.375 6.656,6.604 0.365,0.229 10 false E1 2.917,3.031 3.542,3.344 0.625,0.313 10 false AM2 0.427,3.677 1.292,4.031 0.865,0.354 10 false INP STD_NO.1-3 5.656,0.365 6.281,0.677 0.625,0.313 10 false IGPD 5.656,0.75 5.979,1.021 0.323,0.271 10 false +B 5.667,1.177 6.219,1.396 0.552,0.219 10 false IGRD 3.979,4.323 4.667,4.646 0.688,0.323 10 false IGR NO.1 4.698,3.688 5.375,4.094 0.677,0.406 10 false ECU IGR NO.1 6.302,3.552 6.708,3.781 0.406,0.229 10 false IGR 5.885,6.365 6.281,6.625 0.396,0.26 10 false A30 5.344,6.979 7.125,7.208 1.781,0.229 10 false Hybrid Vehicle Control ECU 5.438,3.531 6.063,3.844 0.625,0.313 10 false 6E 3.375,2.49 4,2.802 0.625,0.313 10 false 6B 2.76,2.49 3.385,2.802 0.625,0.313 10 false 6B 1.448,3.531 1.771,3.771 0.323,0.24 10 false 6K 2,2.49 2.625,2.802 0.625,0.313 10 false 6C 1.479,3.333 1.729,3.542 0.25,0.208 10 false 1 2.292,2.49 2.917,2.802 0.625,0.313 10 false 17 3.063,2.49 3.688,2.802 0.625,0.313 10 false 9 3.667,2.49 4.292,2.802 0.625,0.313 10 false 11 5.438,3.354 5.802,3.594 0.365,0.24 10 false 22 4.948,1.552 7.042,1.969 2.094,0.417 10 false Certification ECU (smart key ECU assembly) 5.229,1.177 5.594,1.417 0.365,0.24 9 false A126 5.271,0.365 5.677,0.615 0.406,0.25 9 false A126 5.26,0.771 5.885,1.083 0.625,0.313 9 false G170 5.375,0.594 5.656,0.781 0.281,0.188 10 false 6 5.323,0.99 5.604,1.229 0.281,0.24 10 false 11 5.323,0.177 5.542,0.375 0.219,0.198 10 false 24 5.958,3.323 6.313,3.552 0.354,0.229 10 false 33 5.917,3.531 6.344,3.781 0.427,0.25 10 false A31 5.948,6.167 6.26,6.406 0.313,0.24 10 false 15 2.344,5.271 5.146,5.604 2.802,0.333 10 false Power Distribution Box Assembly 5.427,4.042 5.698,4.281 0.271,0.24 10 false 36 5.448,4.469 5.802,4.719 0.354,0.25 10 false 41 5.438,4.229 5.802,4.417 0.365,0.188 10 false 6B 5.438,4.646 6.063,4.958 0.625,0.313 10 false 6C

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.


PROCEDURE

1.READ VALUE USING GTS (IGR)
a.

Read the Data List.

Powertrain > Hybrid Control > Data List
Tester Display
IGR
50003 397 656
Standard:
GTS Display Switch Condition Specified Condition
IGR Ignition switch ON ON


Result:
Proceed to
OK
NG




OK

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID CONTROL SYSTEM>CHECK FOR INTERMITTENT PROBLEMS


NG

2.CHECK TERMINAL VOLTAGE (IGR VOLTAGE)
2.CHECK TERMINAL VOLTAGE (IGR VOLTAGE)
a.

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

A494962C40
4.51,0.313 4.906,0.563 0.396,0.25 2.604,0.302 3,0.552 0.396,0.25 2.271,1.5 1.885,2.271 true 5.542,1.375 6.052,2.281 true 0.323,0.219 0.635,0.375 0.313,0.156 10 false *a 4.594,0.354 4.906,0.51 0.313,0.156 10 false A30 6.083,2.344 6.552,2.563 0.469,0.219 10 false E1 1.781,2.333 2.25,2.552 0.469,0.219 10 false IGR 2.688,0.344 3,0.5 0.313,0.156 10 false A31
*a Component with harness connected
(Hybrid Vehicle Control ECU) 		- -


Standard Voltage:
Tester Connection Switch Condition Specified Condition
A31-33 (IGR) - A30-15 (E1) Ignition switch ON 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL


NG

3.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - HYBRID VEHICLE CONTROL ECU)
3.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - HYBRID VEHICLE CONTROL ECU)
a.

Disconnect the A31 hybrid vehicle control ECU connector.


b.

Disconnect the 6E power distribution box assembly connector.


c.

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

Standard Resistance (Check for Open):
Tester Connection Condition Specified Condition
6E-22 - A31-33 (IGR) Always Below 1 Ω


Standard Resistance (Check for Short):
Tester Connection Condition Specified Condition
6E-22 or A31-33 (IGR) - Body Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

4.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (POWER DISTRIBUTION BOX ASSEMBLY - BODY GROUND)
a.

Disconnect the 6B and 6C power distribution box assembly connectors.


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 POWER DISTRIBUTION BOX ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR