RM35X0E _57 Power Source / Network _078518 NETWORKING _0396952 CXPI COMMUNICATION SYSTEM U

NETWORKING  CXPI COMMUNICATION SYSTEM  TERMINALS OF ECU  


NOTICE:
·

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

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

·

When disconnecting and reconnecting the battery.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>WORK PROCEDURE

HINT:

When disconnecting and reconnecting the 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 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)


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.

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

Tester Connection Wiring Color Terminal Description Condition Specified Condition
A-11 (GND1) - Body ground None - Body ground Ground Always Below 1 Ω
A-31 (BECU) - Body ground None - Body ground Battery power supply Always 11 to 14 V
A-30 (ACC) - Body ground None - Body ground ACC power supply Ignition switch ACC 11 to 14 V
Ignition switch off Below 1 V
A-32 (IG) - Body ground None - Body ground IG power supply Ignition switch ON 11 to 14 V
Ignition switch off Below 1 V


c.

Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
N18-11 (CXP2) - Body ground G - Body ground CXPI communication line Ignition switch ON Pulse generation



ROOM LIGHT CONTROL RELAY (for Front Side)


C407748
3.26,0.094 3.76,0.385 0.5,0.292 3.354,0.156 3.969,0.354 0.615,0.198 10 false N148

a.

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

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
N148-7 (B) - Body ground B - Body ground Battery power supply Always 11 to 14 V
N148-9 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω


b.

Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
N148-10 (CXPI) - Body ground L - Body ground CXPI communication line Ignition switch ON Pulse generation



ROOM LIGHT CONTROL RELAY (for Rear Side) (w/ Door Trim Illumination [for 3 Colors Type])


C407748
3.26,0.094 3.76,0.385 0.5,0.292 3.396,0.156 4.01,0.354 0.615,0.198 10 false V33

a.

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

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
V33-7 (BU+) - Body ground R - Body ground Battery power supply Always 11 to 14 V
V33-9 (BU-) - Body ground W-B - Body ground Ground Always Below 1 Ω


b.

Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
V33-10 (CXPI) - Body ground L - Body ground CXPI communication line Ignition switch ON Pulse generation