RM3660EC _58 Vehicle Interior _080748 SEAT BELT _0600558 SEAT BELT WARNING SYSTEM(for NR Series Engine) U

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


CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND DRIVER SIDE JUNCTION BLOCK ASSEMBLY


B472410E67
3.156,3.219 3.594,3.469 0.438,0.25 5.448,3.208 5.885,3.458 0.438,0.25 1.698,4.573 2.135,4.823 0.438,0.25 5.385,4.573 5.823,4.823 0.438,0.25 1.104,6.167 1.542,6.417 0.438,0.25 3.667,6.125 4.104,6.375 0.438,0.25 5.292,6.198 5.729,6.448 0.438,0.25 6.313,6.198 6.75,6.448 0.438,0.25 3.365,7.646 3.802,7.896 0.438,0.25 1.125,3.271 1.563,3.521 0.438,0.25 1.656,1.208 1.958,1.208 false 1.667,1.552 1.969,1.552 false 1.667,1.875 1.969,1.875 false 4.042,0.792 4.042,0.313 4.042,0.313 4.229,0.313 false 3.469,7.698 3.781,7.896 0.313,0.198 10 false MB 4.292,0.24 4.604,0.438 0.313,0.198 10 false MB 2.042,1.135 2.354,1.333 0.313,0.198 10 false I86 2.052,1.479 2.365,1.677 0.313,0.198 10 false I85 0.875,1.083 1.188,1.281 0.313,0.198 10 false 4A 0.875,1.667 1.188,1.865 0.313,0.198 10 false 4B 0.885,2.031 1.198,2.229 0.313,0.198 10 false 4C 0.906,2.26 1.219,2.458 0.313,0.198 10 false 4D 5.854,1.146 6.167,1.344 0.313,0.198 10 false 4F 5.854,1.76 6.167,1.958 0.313,0.198 10 false 4E 1.271,3.302 1.583,3.5 0.313,0.198 10 false I84 3.271,3.271 3.583,3.469 0.313,0.198 10 false I85 5.542,3.26 5.854,3.458 0.313,0.198 10 false I86 1.833,4.625 2.146,4.823 0.313,0.198 10 false 4E 1.24,6.219 1.552,6.417 0.313,0.198 10 false 4B 3.813,6.177 4.125,6.375 0.313,0.198 10 false 4A 6.438,6.24 6.75,6.438 0.313,0.198 10 false 4C 5.427,6.25 5.74,6.448 0.313,0.198 10 false 4D 5.51,4.625 5.823,4.823 0.313,0.198 10 false 4F 2.052,1.792 2.469,2 0.417,0.208 10 false I84

a.

Disconnect the driver side junction block assembly and main body ECU (multiplex network body ECU) connectors.

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


b.

Reconnect the driver side junction block assembly connectors.


c.

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
MB-31 (BECU) - Body ground Battery power supply Always 11 to 14 V
MB-32 (IG) - Body ground Ignition power supply (IG signal) Ignition switch ON → off 11 to 14 V → Below 1 V
MB-30 (ACC) - Body ground Ignition power supply (ACC signal) Ignition switch ACC → off 11 to 14 V → Below 1 V
MB-11 (GND1) - Body ground Ground Always Below 1 Ω
MB-18 (DBKL) - Body ground Driver seat belt buckle switch signal Driver seat belt fastened 10 kΩ or higher
Driver seat belt unfastened Below 1 Ω
MB-2 (RCTY) - Body ground Rear door courtesy light switch RH input Rear door RH closed (OFF) 10 kΩ or higher
Rear door RH open (ON) Below 1 Ω
MB-13 (LCTY) - Body ground Rear door courtesy light switch LH input Rear door LH closed (OFF) 10 kΩ or higher
Rear door LH open (ON) Below 1 Ω
I86-19 (GND2) - Body ground Ground Always Below 1 Ω



CHECK COMBINATION METER ASSEMBLY


E391347N02
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 and I5 combination meter assembly connectors.


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
I4-22 (B) - Body ground Battery power supply Always 11 to 14 V
I4-38 (IG+) - Body ground Ignition power supply (IG signal) Ignition switch ON → off 11 to 14 V → Below 1 V
I4-23 (ES) - Body ground Ground Always Below 1 Ω
I5-34 (PBKL) - Body ground Front passenger seat belt buckle switch signal Front passenger seat occupied, seat belt fastened 10 kΩ or higher
Front passenger seat occupied, seat belt unfastened Below 1 Ω
I5-18 (PBKL) - Body ground Occupant detection sensor signal Front passenger seat occupied Below 100 Ω
Front passenger seat not occupied 1 MΩ or higher
I5-36 (RLSB) - Body ground Rear LH seat belt buckle switch signal Rear LH seat belt fastened 10 kΩ or higher
Rear LH seat belt unfastened Below 1 Ω
I5-35 (RRSB) - Body ground Rear RH seat belt buckle switch signal Rear RH seat belt fastened 10 kΩ or higher
Rear RH seat belt unfastened Below 1 Ω
I5-19 (RCSB) - Body ground Rear center seat belt buckle switch signal Rear center seat belt fastened 10 kΩ or higher
Rear center seat belt unfastened Below 1 Ω