RM3660EC _59 Vehicle Exterior _080784 LIGHTING (EXT) _0600055 LIGHTING SYSTEM(for NR Series Engine) U

LIGHTING (EXT)  LIGHTING SYSTEM(for NR Series Engine)  TERMINALS OF ECU  


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


E432301C03
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 1.104,3.229 1.542,3.479 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 2.052,1.813 2.49,2.021 0.438,0.208 10 false I84 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 3.292,3.271 3.604,3.469 0.313,0.198 10 false I85 5.573,3.26 5.885,3.458 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 1.24,3.26 1.552,3.458 0.313,0.198 10 false I84

a.

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


b.

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

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
4B-1 - Body ground B - Body ground Battery power supply Always 11 to 14 V
4B-7 - Body ground W - Body ground Battery power supply Always 11 to 14 V
4B-20 - Body ground P - Body ground Battery power supply Always 11 to 14 V
4B-28 - Body ground P - Body ground Battery power supply Always 11 to 14 V
4B-30 - Body ground G - Body ground Battery power supply Always 11 to 14 V
4D-1 - Body ground B-R - Body ground Battery power supply Always 11 to 14 V
4F-3 - Body ground W-B - Body ground Ground Always Below 1 Ω
I86-19 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω


c.

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


d.

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

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
4A-10 - Body ground*3 G - Body ground Back-up lights drive output Ignition switch off, reverse (R) not selected Below 1 V
Ignition switch ON, reverse (R) selected 11 to 14 V
4A-21 - Body ground P - Body ground*2
B - Body ground*3 		Rear fog light drive output Taillights on, fog light switch in rear position 11 to 14 V
Taillights on, fog light switch in off position Below 1 V
4A-28 - Body ground BR - Body ground*2
LG - Body ground*3 		Daytime running light system drive output Daytime running light system operating Below 1 V
Daytime running light system not operating 11 to 14 V
4A-30 - Body ground L - Body ground Taillights and license plate lights drive output Taillights on 11 to 14 V
Taillight off Below 1 V
4B-19 - Body ground*3 GR - Body ground BKUP LP relay drive output Ignition switch off, reverse (R) not selected Below 1 V
Ignition switch ON, reverse (R) selected 11 to 14 V
4B-23 - Body ground R - Body ground BKUP LP relay drive output Ignition switch off Below 1 V
Ignition switch ON 11 to 14 V
4B-31 - Body ground G - Body ground H-LP LH relay drive output Light control switch in head position Below 1 V
Taillight off 11 to 14 V
4B-32 - Body ground L - Body ground Clearance lights drive output Taillights on 11 to 14 V
Taillight off Below 1 V
4E-38 - Body ground Y - Body ground Parking brake switch input Ignition switch ON, parking brake switch on Below 1 V
Ignition switch ON, parking brake switch off 11 to 14 V
4E-52 - Body ground*1 R - Body ground FR FOG relay drive output Taillights on, fog light switch in front position Below 1 V
Taillights on, fog light switch in off position 11 to 14 V
4F-11 - Body ground*1 GR - Body ground Tail signal output Taillights on 11 to 14 V
Taillight off Below 1 V
I84-21 (AHID) - Body ground LG - Body ground Auto high beam switch indicator drive output Ignition switch ON, auto high beam switch on Below 1 V
Ignition switch ON, auto high beam switch off 11 to 14 V
I85-12 (HRY2) - Body ground G - Body ground H-LP RH relay drive output Light control switch in head position Below 1 V
Taillight off 11 to 14 V
I85-13 (DIM) - Body ground Y - Body ground High beam headlight drive output Light control switch in head position and dimmer switch in high or high flash position Below 1 V
Dimmer switch not in high or high flash position 11 to 14 V
I85-16 (HEAD) - Body ground L - Body ground Light control switch head position input Light control switch in head position Below 1 V
Light control switch not in head position 11 to 14 V
I85-23 (CLTB) - I85-25 (CLTE) R - B Automatic light control sensor power supply output Ignition switch ON 11 to 14 V
I85-24 (CLTS) - Body ground W - Body ground Automatic light control sensor signal input Ignition switch off Below 1 V
Ignition switch ON Pulse generation
(See waveform 1)
I85-26 (AHBI) - Body ground L - Body ground Auto high beam switch signal input Auto high beam switch on Below 1 V
Auto high beam switch off 11 to 14 V
I86-14 (LLEW) - Body ground L - Body ground Light control ECU signal input Ignition switch ON, taillight off 11 to 14 V
Ignition switch ON, light control switch in head position Pulse generation
I86-15 (RLEW) - Body ground B - Body ground Light control ECU signal input Ignition switch ON, taillight off 11 to 14 V
Ignition switch ON, light control switch in head position Pulse generation

*1: w/ Front Fog Light

*2: for TFTM Made

*3: for GTMC Made


i.
E276298N01
2.844,1.646 3.219,1.813 0.375,0.167 10 false GND

Waveform 1

Item Content
Tester Connection I85-24 (CLTS) - Body ground
Tool setting 2 V/DIV., 10 ms./DIV.
Condition Ignition switch ON

HINT:

The communication waveform changes according to the surrounding brightness.





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