RM38N0EC _59 Vehicle Exterior _111834 LIGHTING (EXT) _0499887 LIGHTING SYSTEM J

LIGHTING (EXT) LIGHTING SYSTEM Back-up Light Circuit

DESCRIPTION

The hybrid vehicle control ECU controls the back-up lights via the BKUP LP relay.

WIRING DIAGRAM

6.208,0.833 6.646,1.26 0.438,0.427 10 false IC 0.563,1.969 1.448,2.417 0.885,0.448 10 false from Auxiliary Battery 4.833,2.635 5.906,2.833 1.073,0.198 10 false BKUP LP 0.813,1.417 3.646,1.667 2.833,0.25 10 false Hybrid Vehicle Control ECU 1.563,3.125 3.427,3.385 1.865,0.26 10 false Back-up Light 0.917,3.552 3.302,3.99 2.385,0.438 10 false Rear Turn Signal Light Assembly LH 4.427,4.948 6.583,5.167 2.156,0.219 10 false Power Distribution Box Assembly 1.208,2.854 1.365,3.052 0.156,0.198 10 false E 1.208,4.281 1.365,4.479 0.156,0.198 10 false E 2.552,2.854 3.01,3.052 0.458,0.198 10 false B 2.563,4.271 3.021,4.469 0.458,0.198 10 false B 1.969,0.875 2.427,1.073 0.458,0.198 10 false BL 2.292,2.125 3.51,2.406 1.219,0.281 10 false INP STD NO. 1-1 0.927,3.344 1.385,3.542 0.458,0.198 10 false S8 2.25,0.76 2.708,0.958 0.458,0.198 10 false 49 3.573,0.667 4.031,0.865 0.458,0.198 10 false 29 3.583,0.854 4.042,1.052 0.458,0.198 10 false 4B 3.583,1.979 4.042,2.177 0.458,0.198 10 false 4G 3.583,2.969 4.042,3.167 0.458,0.198 10 false 4E 1.021,2.854 1.479,3.052 0.458,0.198 10 false 1 3.573,2.781 4.031,2.979 0.458,0.198 10 false 38 2.781,2.854 3.24,3.052 0.458,0.198 10 false 2 0.802,1.25 1.26,1.448 0.458,0.198 10 false A33 0.917,4.75 1.375,4.948 0.458,0.198 10 false S7 3.615,1.792 4.073,1.99 0.458,0.198 10 false 1 1.021,4.271 1.479,4.469 0.458,0.198 10 false 1 2.781,4.271 3.24,4.469 0.458,0.198 10 false 2 1.563,4.542 3.427,4.802 1.865,0.26 10 false Back-up Light 0.927,4.969 3.5,5.385 2.573,0.417 10 false Rear Turn Signal Light Assembly RH

CAUTION / NOTICE / HINT

NOTICE:: ·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

Before replacing the hybrid vehicle control ECU, refer to Service Bulletin.

·

When replacing the hybrid vehicle control ECU, update the ECU security key.

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>UPDATE ECU SECURITY KEY202111,999999,_V1,_111780,_0504977,RM100000001ZKRX,

PROCEDURE

1.READ VALUE USING GTS

Turn the ignition switch to ON.

Move the shift lever to R.

Read the Data List according to the display on the GTS.

Body Electrical > Power Distribution Box > Data List

Tester Display	Measurement Item	Normal Condition	Reference Value	Diagnostic Note
Back-up Light Fuse Shut Off Status	Back-up light fuse shut off status	OFF or ON	OFF: Fuse has no shut off history ON: Fuse has shut off history	-

Body Electrical > Power Distribution Box > Data List

Tester Display
Back-up Light Fuse Shut Off Status

50003 475 1308

OK:: The Data List value displays "OFF".

Result:

Proceed to
OK
NG

2.READ VALUE USING GTS

8.CHECK REAR TURN SIGNAL LIGHT ASSEMBLY LH

2.READ VALUE USING GTS

Read the Data List according to the display on the GTS.

Body Electrical > Power Distribution Box > Data List

Tester Display	Measurement Item	Normal Condition	Reference Value	Diagnostic Note
Back-up Light Input Signal	Back-up light input	OFF or ON	OFF: Shift lever in any position other than R ON: Shift lever in R	-

Body Electrical > Power Distribution Box > Data List

Tester Display
Back-up Light Input Signal

50003 475 1305

OK:: Display changes according to shift lever operation.

Result:

Proceed to
OK
NG

3.CHECK HARNESS AND CONNECTOR (POWER SOURCE - POWER DISTRIBUTION BOX ASSEMBLY)

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

3.CHECK HARNESS AND CONNECTOR (POWER SOURCE - POWER DISTRIBUTION BOX ASSEMBLY)

Disconnect the 4G power distribution box assembly connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
4G-1 - Body ground	Ignition switch off	11 to 14 V

Result:

Proceed to
OK
NG

4.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)

Disconnect the S8 rear turn signal light assembly LH connector.

Disconnect the S7 rear turn signal light assembly RH connector.

Disconnect the 4E power distribution box assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(S8,S7)Location & Routingewd_type=routing;type=c,c;code=S8,S7 Click Connector(S8)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly LHewd_type=component;type=c;code=S8;pinno=2 Click Connector(S7)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly RHewd_type=component;type=c;code=S7;pinno=2
S8-2 (B) - 4E-38	Always	Below 1 Ω
S7-2 (B) - 4E-38	Always	Below 1 Ω

Tester Connection

Condition

Specified Condition

Click Location & Routing(S8,S7)Location & Routingewd_type=routing;type=c,c;code=S8,S7

Click Connector(S8)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly LHewd_type=component;type=c;code=S8;pinno=2

Click Connector(S7)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly RHewd_type=component;type=c;code=S7;pinno=2

S8-2 (B) - 4E-38

Always

Below 1 Ω

S7-2 (B) - 4E-38

Always

Below 1 Ω

Result:

Proceed to
OK
NG

5.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - BODY GROUND)

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - BODY GROUND)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(S8,S7)Location & Routingewd_type=routing;type=c,c;code=S8,S7 Click Connector(S8)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly LHewd_type=component;type=c;code=S8;pinno=1 Click Connector(S7)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly RHewd_type=component;type=c;code=S7;pinno=1
S8-1 (E) - Body ground	Always	Below 1 Ω
S7-1 (E) - Body ground	Always	Below 1 Ω

Tester Connection

Condition

Specified Condition

Click Location & Routing(S8,S7)Location & Routingewd_type=routing;type=c,c;code=S8,S7

Click Connector(S8)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly LHewd_type=component;type=c;code=S8;pinno=1

Click Connector(S7)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly RHewd_type=component;type=c;code=S7;pinno=1

S8-1 (E) - Body ground

Always

Below 1 Ω

S7-1 (E) - Body ground

Always

Below 1 Ω

Result:

Proceed to
OK
NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL202111,202203,_57,_111828,_0500082,RM100000001Z1A6,202203,202303,_57,_111828,_0500082,RM1000000022I31,202303,202406,_57,_111828,_0500082,RM100000002B19F,202406,999999,_57,_111828,_0500082,RM100000002MQ55,

REPAIR OR REPLACE HARNESS OR CONNECTOR

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

Disconnect the A33 hybrid vehicle control ECU connector.

Disconnect the 4B power distribution box assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(A33)Location & Routingewd_type=routing;type=c;code=A33 Click Connector(A33)Instrument Panel>Engine Room Main Wire>Hybrid Vehicle Control ECUewd_type=component;type=c;code=A33;pinno=49
A33-49 (BL) - 4B-29	Always	Below 1 Ω
A33-49 (BL) or 4B-29 - Body ground	Always	10 kΩ or higher

Tester Connection

Condition

Specified Condition

Click Location & Routing(A33)Location & Routingewd_type=routing;type=c;code=A33

Click Connector(A33)Instrument Panel>Engine Room Main Wire>Hybrid Vehicle Control ECUewd_type=component;type=c;code=A33;pinno=49

A33-49 (BL) - 4B-29

Always

Below 1 Ω

A33-49 (BL) or 4B-29 - Body ground

Always

10 kΩ or higher

Result:

Proceed to
OK
NG

7.CHECK HYBRID VEHICLE CONTROL ECU (OUTPUT VOLTAGE)

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.CHECK HYBRID VEHICLE CONTROL ECU (OUTPUT VOLTAGE)

0.646,1.552 1.146,1.802 0.5,0.25 0.781,1.573 1.094,1.771 0.313,0.198 10 false 4B 0.458,0.208 0.771,0.406 0.313,0.198 10 false *a

*a	Component with harness connected (Power Distribution Box Assembly)

Connect the A33 hybrid vehicle control ECU connector.

Connect the 4B power distribution box assembly connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
4B-29 - Body ground	Ignition switch ON, reverse (R) not selected	Below 1 V
4B-29 - Body ground	Ignition switch ON, reverse (R) selected	11 to 14 V

Result:

Proceed to
OK
NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

REPLACE HYBRID VEHICLE CONTROL ECU

Click hereEngine / Hybrid System>HYBRID / BATTERY CONTROL>HYBRID VEHICLE CONTROL ECU>REMOVAL202111,202203,_51,_111804,_0501637,RM100000001Z73M,202203,202303,_51,_111804,_0501637,RM1000000022IYY,202303,202406,_51,_111804,_0501637,RM100000002BJD5,202406,999999,_51,_111804,_0501637,RM100000002MPVI,

8.CHECK REAR TURN SIGNAL LIGHT ASSEMBLY LH

Disconnect the S8 rear turn signal light assembly LH connector.

Turn the ignition switch to ON.

Move the shift lever to R.

Read the Data List according to the display on the GTS.

Body Electrical > Power Distribution Box > Data List

Tester Display	Measurement Item	Normal Condition	Reference Value	Diagnostic Note
Back-up Light Fuse Shut Off Status	Back-up light fuse shut off status	OFF or ON	OFF: Fuse has no shut off history ON: Fuse has shut off history	-

Body Electrical > Power Distribution Box > Data List

Tester Display
Back-up Light Fuse Shut Off Status

50003 475 1308

OK:: The Data List value displays "OFF".

Result:

Proceed to
OK
NG

REPLACE REAR TURN SIGNAL LIGHT ASSEMBLY LH

Click hereVehicle Exterior>LIGHTING (EXT)>REAR TURN SIGNAL LIGHT ASSEMBLY>REMOVAL202111,202203,_59,_111834,_0499892,RM100000001Z0LP,202203,202303,_59,_111834,_0499892,RM1000000022MW1,202303,202406,_59,_111834,_0499892,RM100000002AN1H,202406,999999,_59,_111834,_0499892,RM100000002MT73,

9.CHECK REAR TURN SIGNAL LIGHT ASSEMBLY RH

Disconnect the S7 rear turn signal light assembly RH connector.

Turn the ignition switch to ON.

Move the shift lever to R.

Read the Data List according to the display on the GTS.

Body Electrical > Power Distribution Box > Data List

Tester Display	Measurement Item	Normal Condition	Reference Value	Diagnostic Note
Back-up Light Fuse Shut Off Status	Back-up light fuse shut off status	OFF or ON	OFF: Fuse has no shut off history ON: Fuse has shut off history	-

Body Electrical > Power Distribution Box > Data List

Tester Display
Back-up Light Fuse Shut Off Status

50003 475 1308

OK:: The Data List value displays "OFF".

Result:

Proceed to
OK
NG

REPLACE REAR TURN SIGNAL LIGHT ASSEMBLY RH

10.CHECK HARNESS AND CONNECTOR (REAR TURN SIGNAL LIGHT ASSEMBLY - POWER DISTRIBUTION BOX ASSEMBLY)

Disconnect the 4E power distribution box assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(S8,S7)Location & Routingewd_type=routing;type=c,c;code=S8,S7 Click Connector(S8)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly LHewd_type=component;type=c;code=S8;pinno=2 Click Connector(S7)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly RHewd_type=component;type=c;code=S7;pinno=2
S8-2 (B), S7-2 (B) or 4E-38 - Body ground	Always	10 kΩ or higher

Tester Connection

Condition

Specified Condition

Click Location & Routing(S8,S7)Location & Routingewd_type=routing;type=c,c;code=S8,S7

Click Connector(S8)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly LHewd_type=component;type=c;code=S8;pinno=2

Click Connector(S7)Body>No. 2 Luggage Room Wire / No. 3 Luggage Room Wire>Rear Turn Signal Light Assembly RHewd_type=component;type=c;code=S7;pinno=2

S8-2 (B), S7-2 (B) or 4E-38 - Body ground

Always

10 kΩ or higher

Result:

Proceed to
OK
NG

REPLACE POWER DISTRIBUTION BOX ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR