RM38T0EC _57 Power Source / Network _111968 POWER DISTRIBUTION _0503878 POWER INTEGRATION SYSTEM U

POWER DISTRIBUTION  POWER INTEGRATION SYSTEM  TERMINALS OF ECU  


NOTICE:
·

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

·

When disconnecting and reconnecting the auxiliary battery.

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART




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


E475470E01
4.448,3.271 4.833,3.5 0.385,0.229 2.333,4.521 2.719,4.75 0.385,0.229 4.531,4.5 4.917,4.729 0.385,0.229 2.167,1.104 2.552,1.333 0.385,0.229 1.146,6.104 1.531,6.333 0.385,0.229 2.938,6.104 3.323,6.333 0.385,0.229 4.25,6.104 4.635,6.333 0.385,0.229 3.438,7.781 3.823,8.01 0.385,0.229 2.333,3.271 2.719,3.5 0.385,0.229 5.26,6.104 5.646,6.333 0.385,0.229 6.26,6.104 6.646,6.333 0.385,0.229 3.781,0.271 4.167,0.5 0.385,0.229 2.167,1.438 2.552,1.667 0.385,0.229 0.958,1.875 1.271,2.073 0.313,0.198 10 false 8K 1.156,2.385 1.469,2.583 0.313,0.198 10 false 8H 0.979,1.083 1.292,1.281 0.313,0.198 10 false 8F 0.969,1.594 1.281,1.792 0.313,0.198 10 false 8E 2.25,1.469 2.708,1.667 0.458,0.198 10 false I85 3.865,0.292 4.25,0.479 0.385,0.188 10 false MB 2.427,3.323 2.896,3.531 0.469,0.208 10 false I85 4.542,3.313 5,3.51 0.458,0.198 10 false I86 3.052,6.146 3.51,6.344 0.458,0.198 10 false 8E 3.542,7.813 4,8.01 0.458,0.198 10 false MB 6.031,1.729 6.344,1.927 0.313,0.198 10 false 8B 6.031,1.146 6.344,1.344 0.313,0.198 10 false 8C 0.969,2.146 1.281,2.344 0.313,0.198 10 false 8J 4.625,4.552 4.938,4.75 0.313,0.198 10 false 8B 2.448,4.563 2.76,4.76 0.313,0.198 10 false 8C 1.26,6.135 1.573,6.333 0.313,0.198 10 false 8F 4.365,6.146 4.677,6.344 0.313,0.198 10 false 8K 5.375,6.146 5.688,6.344 0.313,0.198 10 false 8J 6.375,6.146 6.688,6.344 0.313,0.198 10 false 8H 2.25,1.146 2.708,1.344 0.458,0.198 10 false I86

a.

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

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


b.

Connect 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 Always 11 to 14 V
MB-27 (IGR) - Body ground Ignition power supply (IG signal) Ignition switch ON 11 to 14 V


d.

Install the power distribution box assembly and the main body ECU (multiplex network body ECU).


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
8E-5 - Body ground CXPI communication line Ignition switch off Below 1 V
Ignition switch ON Pulse generation
8F-43 - Body ground Rear window defogger signal (output) Rear window defogger switch off Below 1.5 V
Rear window defogger switch on 8 to 14 V
8B-2 - Body ground*1 Mirror heater drive voltage (output) Rear window defogger switch off Below 1.5 V
Rear window defogger switch on 8 to 14 V
8C-10 - Body ground Power retract mirror motor drive voltage (output) Outer rear view mirror assembly moving to retract position. 8 to 14 V
Outer rear view mirror assembly not moving. Below 1.5 V
8C-21 - Body ground Power retract mirror motor drive voltage (output) Outer rear view mirror assembly moving to driving position. 8 to 14 V
Outer rear view mirror assembly not moving. Below 1.5 V
8F-25 - Body ground*2 Front fog light output Tail light illuminated, front fog light switch off 8 to 14 V
Tail light illuminated, front fog light switch on Below 1.5 V
8F-26 - Body ground Rear fog light output Tail light illuminated, rear fog light switch off Below 1.5 V
Tail light illuminated, rear fog light switch on 8 to 14 V
8F-30 - Body ground Tail light output Tail light not illuminated Below 1.5 V
Tail light illuminated 8 to 14 V
8F-38 - Body ground Back-up light output Ignition switch ON, shift position is not R Below 1.5 V
Ignition switch ON, shift position is R 8 to 14 V

*1: w/ Mirror Heater

*2: w/ Front Fog Light