RM35X0E _58 Vehicle Interior _078602 SEAT BELT _0385912 SEAT BELT WARNING SYSTEM U

SEAT BELT  SEAT BELT WARNING SYSTEM  TERMINALS OF ECU  


CHECK COMBINATION METER ASSEMBLY


E416614N01
1.802,0.708 2.271,0.948 0.469,0.24 4.927,0.667 5.396,0.906 0.469,0.24 1.927,0.729 2.385,0.927 0.458,0.198 10 false N22 5.031,0.698 5.49,0.896 0.458,0.198 10 false N23

a.

Disconnect the N22 combination meter assembly connector.


b.

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

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
N22-22 (B) - Body ground SB - Body ground Battery power supply Always 11 to 14 V
N22-38 (IG+) - Body ground P - Body ground*1
B - Body ground*2 		Ignition power supply Ignition switch ON 10.5 to 16 V*1
11 to 14 V*2
Ignition switch off Below 1 V
N22-19 (EP) - Body ground W-B - Body ground Ground Always Below 1 Ω
N22-23 (ET) - Body ground BR - Body ground Ground Always Below 1 Ω

*1: w/ Stop and Start System

*2: w/o Stop and Start System



c.

Reconnect the N22 combination meter assembly connector.


d.

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

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
N23-35 (RRSB) - Body ground*3 L - Body ground Rear No. 1 RH seat belt buckle switch and occupant detection signal Rear No. 1 RH seat occupied, seat belt fastened Below 100 Ω
Rear No. 1 RH seat occupied, seat belt unfastened 1 MΩ or higher
N23-19 (RCSB) - Body ground*3*4,*5 LG - Body ground*4
B - Body ground*9
·

Rear No. 1 center seat belt buckle switch and occupant detection signal*4

·

Rear No. 3 center seat belt buckle switch and occupant detection signal*5


·

Rear No. 1 center seat occupied, seat belt fastened*4

·

Rear No. 3 center seat occupied, seat belt fastened*5


Below 100 Ω
·

Rear No. 1 center seat occupied, seat belt unfastened*4

·

Rear No. 3 center seat occupied, seat belt unfastened*5


1 MΩ or higher
N23-36 (RLSB) - Body ground*3 V - Body ground Rear No. 1 LH seat belt buckle switch and occupant detection signal Rear No. 1 LH seat occupied, seat belt fastened Below 100 Ω
Rear No. 1 LH seat occupied, seat belt unfastened 1 MΩ or higher
N23-21 (RDC) - Body ground*6 BE - Body ground Rear No. 2 RH seat belt buckle switch and occupant detection signal Rear No. 2 RH seat occupied, seat belt fastened Below 100 Ω
Rear No. 2 RH seat occupied, seat belt unfastened 1 MΩ or higher
N23-37 (RDC) - Body ground*6 R - Body ground Rear No. 2 LH seat belt buckle switch and occupant detection signal Rear No. 2 LH seat belt buckle switch and occupant detection signal Below 100 Ω
Rear No. 2 LH seat occupied, seat belt unfastened 1 MΩ or higher
N23-22 (RBE+) - Body ground*7 P - Body ground Rear No. 3 RH seat belt buckle switch and occupant detection signal Rear No. 3 RH seat occupied, seat belt fastened Below 100 Ω
Rear No. 3 RH seat occupied, seat belt unfastened 1 MΩ or higher
N23-38 (LBE-) - Body ground*8 GR - Body ground Rear No. 3 LH seat belt buckle switch and occupant detection signal Rear No. 3 LH seat belt buckle switch and occupant detection signal Below 100 Ω
Rear No. 3 LH seat occupied, seat belt unfastened 1 MΩ or higher
N23-8 (RRMT) - Body ground*3 Y - Body ground Rear No. 1 RH seat belt warning light output signal Ignition switch ON, rear No. 1 RH seat belt warning light off 11 to 14 V
Ignition switch ON, rear No. 1 RH seat belt warning light on Below 1 V
N23-9 (RLMT) - Body ground*3 L - Body ground Rear No. 1 LH seat belt warning light output signal Ignition switch ON, rear No. 1 LH seat belt warning light off 11 to 14 V
Ignition switch ON, rear No. 1 LH seat belt warning light on Below 1 V
N23-25 (RCMT) - Body ground*3*4,*5 B - Body ground*3*4
G - Body ground*5
·

Rear No. 1 center seat belt warning light output signal*3*4

·

Rear No. 3 center seat belt warning light output signal*5


·

Ignition switch ON, rear center seat belt warning light off*3*4

·

Ignition switch ON, rear No. 3 center seat belt warning light off*5


11 to 14 V
·

Ignition switch ON, rear center seat belt warning light on*3*4

·

Ignition switch ON, rear No. 3 center seat belt warning light on*5


Below 1 V
N23-10 (R2RM) - Body ground*3*9 R - Body ground Rear No. 2 RH seat belt warning light output signal Ignition switch ON, rear No. 2 RH seat belt warning light off 11 to 14 V
Ignition switch ON, rear No. 2 RH seat belt warning light on Below 1 V
N23-11 (SW) - Body ground*7 SB - Body ground Rear No. 3 RH seat belt warning light output signal Ignition switch ON, rear No. 3 RH seat belt warning light off 11 to 14 V
Ignition switch ON, rear No. 3 RH seat belt warning light on Below 1 V
N23-26 (R2LM) - Body ground*3*9 W - Body ground Rear No. 2 LH seat belt warning light output signal Ignition switch ON, rear No. 2 LH seat belt warning light off 11 to 14 V
Ignition switch ON, rear No. 2 LH seat belt warning light on Below 1 V
N23-27 (B) - Body ground*8 BE - Body ground Rear No. 3 LH seat belt warning light output signal Ignition switch ON, rear No. 3 LH seat belt warning light off 11 to 14 V
Ignition switch ON, rear No. 3 LH seat belt warning light on Below 1 V
N23-20 (P/SB) - Body ground*1 B - Body ground Front center seat belt buckle switch and occupant detection signal Front center seat occupied, seat belt fastened Below 100 Ω
Front center seat occupied, seat belt unfastened 1 MΩ or higher
N23-34 (PBKL) - Body ground*2 G - Body ground Front passenger seat belt buckle switch and occupant detection signal Front passenger seat occupied, seat belt fastened Below 100 Ω
Front passenger seat occupied, seat belt unfastened 1 MΩ or higher

*1: w/ Front Center Seat Belt Warning

*2: w/ Front Passenger Seat Belt Warning

*3: w/ Rear Seat Belt Warning

*4: except Wagon

*5: w/ Rear No. 3 Center Seat Belt Warning

*6: w/ Rear No. 2 Seat Belt Warning

*7: w/ Rear No. 3 RH Seat Belt Warning

*8: w/ Rear No. 3 LH Seat Belt Warning

*9: for Wagon




CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


E412753C01
3.208,7.729 3.615,8.01 0.406,0.281 5.969,6.26 6.375,6.542 0.406,0.281 2.021,4.49 2.427,4.771 0.406,0.281 5.208,4.469 5.615,4.75 0.406,0.281 1.375,6.073 1.781,6.354 0.406,0.281 3.448,6.083 3.854,6.365 0.406,0.281 5.083,5.969 5.49,6.25 0.406,0.281 5.083,6.302 5.49,6.583 0.406,0.281 3.156,3.052 3.563,3.333 0.406,0.281 5.219,3.042 5.625,3.323 0.406,0.281 1.365,3.063 1.771,3.344 0.406,0.281 0.635,2.167 0.917,2.167 true 1.583,1.438 1.865,1.438 true 1.594,1.698 1.875,1.698 true 1.594,1.146 1.875,1.146 true 1.573,0.51 1.573,0.219 1.573,0.219 1.729,0.219 false 0.854,0.969 1.167,1.167 0.313,0.198 10 false 3D 0.844,1.521 1.156,1.719 0.313,0.198 10 false 3C 0.844,1.854 1.156,2.052 0.313,0.198 10 false 3F 5.833,1.042 6.146,1.24 0.313,0.198 10 false 3B 5.833,1.604 6.146,1.802 0.313,0.198 10 false 3A 0.26,2.083 0.875,2.281 0.615,0.198 10 false 3E*A 0.26,2.281 0.875,2.479 0.615,0.198 10 false 3G*B 3.729,0.833 3.885,1.031 0.156,0.198 10 false A 3.375,7.781 3.531,7.979 0.156,0.198 10 false A 6.094,6.323 6.406,6.521 0.313,0.198 10 false 3F 2.104,4.542 2.417,4.74 0.313,0.198 10 false 3A 5.302,4.531 5.615,4.729 0.313,0.198 10 false 3B 1.5,6.156 1.813,6.354 0.313,0.198 10 false 3C 3.573,6.167 3.885,6.365 0.313,0.198 10 false 3D 5.198,6.021 5.51,6.219 0.313,0.198 10 false 3E 5.188,6.365 5.5,6.563 0.313,0.198 10 false 3G 5.552,6.031 5.865,6.229 0.313,0.198 10 false *A 5.563,6.333 5.875,6.531 0.313,0.198 10 false *B 3.25,3.125 3.708,3.323 0.458,0.198 10 false N19 5.281,3.115 5.74,3.313 0.458,0.198 10 false N18 1.427,3.135 1.885,3.333 0.458,0.198 10 false N20 1.938,1.365 2.396,1.563 0.458,0.198 10 false N19 1.938,1.615 2.396,1.813 0.458,0.198 10 false N20 1.927,1.063 2.385,1.26 0.458,0.198 10 false N18 1.771,0.146 2.083,0.344 0.313,0.198 10 false *1
*A for LHD *B for RHD
*1 Main Body ECU (Multiplex Network Body ECU) - -


a.

Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

for LHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for LHD)>REMOVAL

for RHD:

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU (for RHD)>REMOVAL


b.

Reconnect the instrument panel junction block assembly connectors.


c.

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

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
A-31 (BECU) - Body ground - Battery power supply Always 11 to 14 V
A-32 (IG) - Body ground - Ignition power supply Ignition switch ON 11 to 14 V*1
10.5 to 16 V*2
Ignition switch off Below 1 V
A-30 (ACC) - Body ground - ACC power supply Ignition switch ACC 11 to 14 V
Ignition switch off Below 1 V
A-11 (GND1) - Body ground - Ground Always Below 1 Ω
A-18 (DBKL) - Body ground - Driver seat belt buckle switch signal Driver seat belt fastened Below 1 Ω
Driver seat belt unfastened 10 kΩ or higher

*1: w/o Stop and Start System

*2: w/ Stop and Start System