RM3660EC _58 Vehicle Interior _080748 SEAT BELT _0600559 SEAT BELT WARNING SYSTEM(except NR Series Engine) U

SEAT BELT  SEAT BELT WARNING SYSTEM(except NR Series Engine)  TERMINALS OF ECU  


CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


B684942E01
2.385,3.219 2.823,3.469 0.438,0.25 4.708,3.208 5.146,3.458 0.438,0.25 1.76,4.573 2.198,4.823 0.438,0.25 5.385,4.573 5.823,4.823 0.438,0.25 1.208,6.156 1.646,6.406 0.438,0.25 3.083,6.125 3.521,6.375 0.438,0.25 6.281,6.135 6.719,6.385 0.438,0.25 3.531,7.865 3.969,8.115 0.438,0.25 5.281,6.135 5.719,6.385 0.438,0.25 4.271,6.135 4.708,6.385 0.438,0.25 1.667,1.365 1.969,1.365 false 4.042,0.802 4.042,0.323 4.042,0.323 4.229,0.323 false 1.656,1.698 1.958,1.698 false 3.635,7.906 3.948,8.104 0.313,0.198 10 false MB 4.281,0.229 4.594,0.427 0.313,0.198 10 false MB 2.021,1.281 2.333,1.479 0.313,0.198 10 false I86 2.021,1.615 2.333,1.813 0.313,0.198 10 false I85 0.792,1.083 1.104,1.281 0.313,0.198 10 false 10G 0.802,1.51 1.115,1.708 0.313,0.198 10 false 10A 0.813,1.781 1.125,1.979 0.313,0.198 10 false 10C 5.813,1.146 6.125,1.344 0.313,0.198 10 false 10F 2.51,3.26 2.823,3.458 0.313,0.198 10 false I85 4.833,3.26 5.146,3.458 0.313,0.198 10 false I86 1.865,4.615 2.177,4.813 0.313,0.198 10 false 10E 1.313,6.198 1.625,6.396 0.313,0.198 10 false 10G 3.188,6.167 3.5,6.365 0.313,0.198 10 false 10A 4.365,6.177 4.677,6.375 0.313,0.198 10 false 10C 5.375,6.177 5.688,6.375 0.313,0.198 10 false 10B 0.813,2.25 1.125,2.448 0.313,0.198 10 false 10D 0.813,2.01 1.125,2.208 0.313,0.198 10 false 10B 6.375,6.177 6.688,6.375 0.313,0.198 10 false 10D 5.479,4.615 5.792,4.813 0.313,0.198 10 false 10F 5.802,1.76 6.115,1.958 0.313,0.198 10 false 10E

a.

Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

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


b.

Reconnect the power distribution box assembly connectors.


c.

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

Terminal No. (Symbol) Terminal Description Condition Specified Condition
MB-13 (GND1) - Body ground Ground Always Below 1 Ω
MB-14 (GND2) - Body ground Ground Always Below 1 Ω
MB-26 (BECU) - Body ground Auxiliary battery power supply Ignition switch off*1
Always*2 		11 to 14 V
MB-27 (IGR) - Body ground Ignition power supply Ignition switch off Below 1 V
Ignition switch ON 11 to 14 V

*1: for HV Model

*2: for Gasoline Model



d.

Install the main body ECU (multiplex network body ECU).

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


e.

Measure the voltage and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol) Terminal Description Condition Specified Condition
10G-18 (LCTY) - Body ground Rear door courtesy light switch (for LH) input Rear door LH open → closed Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*
10G-10 - Body ground Rear RH seat belt buckle switch signal Rear RH seat belt fastened 11 to 14 V
Rear RH seat belt unfastened Below 1 V
10G-25 - Body ground Rear LH seat belt buckle switch signal Rear LH seat belt fastened 11 to 14 V
Rear LH seat belt unfastened Below 1 V
10G-26 - Body ground Rear center seat belt buckle switch signal Rear center seat belt fastened 11 to 14 V
Rear center seat belt unfastened Below 1 V
10G-27 (RCTY) - Body ground Rear door courtesy light switch (for RH) input Rear door RH open → closed Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*

*: Differs depending on the vehicle model




CHECK COMBINATION METER ASSEMBLY


E391347N04
1.5,0.667 1.917,0.917 0.417,0.25 5.167,0.667 5.583,0.917 0.417,0.25 1.625,0.698 2.083,0.896 0.458,0.198 10 false I4 5.292,0.698 5.75,0.896 0.458,0.198 10 false I5

a.

Disconnect the I4 combination meter assembly connector.


b.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.


Terminal No. (Symbol) Terminal Description Condition Specified Condition
I4-1 (EP) - Body ground Ground Always Below 1 Ω
I4-2 (ES) - Body ground Ground Always Below 1 Ω
I4-5 (B) - Body ground Auxiliary battery power supply Always 11 to 14 V
I4-6 (IG+) - Body ground Ignition power supply Ignition switch off Below 1 V
Ignition switch ON 11 to 14 V
I4-29 (BKL) - Body ground Driver side seat belt buckle switch signal Driver side seat belt fastened 1 MΩ or higher
Driver side seat belt unfastened Below 1 Ω