RM38T0EC _58 Vehicle Interior _115230 THEFT DETERRENT / KEYLESS ENTRY _0512196 THEFT DETERRENT SYSTEM U

THEFT DETERRENT / KEYLESS ENTRY THEFT DETERRENT SYSTEM TERMINALS OF ECU

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

3.396,3.25 3.781,3.479 0.385,0.229 1.521,4.5 1.906,4.729 0.385,0.229 3.875,4.5 4.26,4.729 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 5.26,6.104 5.646,6.333 0.385,0.229 6.26,6.104 6.646,6.333 0.385,0.229 5.458,3.25 5.844,3.479 0.385,0.229 1.958,1.229 2.26,1.229 true 1.958,1.552 2.26,1.552 true 4.167,0.833 4.385,0.406 true 0.948,1.885 1.26,2.083 0.313,0.198 10 false 8K 1.146,2.385 1.458,2.583 0.313,0.198 10 false 8H 0.979,1.083 1.292,1.281 0.313,0.198 10 false 8F 0.958,1.594 1.271,1.792 0.313,0.198 10 false 8E 2.333,1.49 2.792,1.688 0.458,0.198 10 false I86 4.313,0.25 4.698,0.438 0.385,0.188 10 false MB 3.49,3.281 3.948,3.479 0.458,0.198 10 false I86 3.052,6.135 3.51,6.333 0.458,0.198 10 false 8E 3.542,7.813 4,8.01 0.458,0.198 10 false MB 6.01,1.729 6.323,1.927 0.313,0.198 10 false 8B 6.01,1.146 6.333,1.344 0.323,0.198 10 false 8C 0.958,2.146 1.271,2.344 0.313,0.198 10 false 8J 3.969,4.531 4.281,4.729 0.313,0.198 10 false 8B 1.615,4.531 1.927,4.729 0.313,0.198 10 false 8C 1.26,6.135 1.573,6.333 0.313,0.198 10 false 8F 4.365,6.135 4.677,6.333 0.313,0.198 10 false 8K 5.375,6.135 5.688,6.333 0.313,0.198 10 false 8J 6.354,6.135 6.667,6.333 0.313,0.198 10 false 8H 5.542,3.281 6,3.479 0.458,0.198 10 false I85 2.323,1.156 2.781,1.354 0.458,0.198 10 false I85

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

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>REMOVAL202307,999999,_57,_111968,_0500002,RM100000002BJZO,

Reconnect the power distribution box assembly connectors.

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
MB-26 (BECU) - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
MB-27 (IGR) - Body ground	Ignition power supply (IG signal)	Ignition switch off	Below 1 V
MB-27 (IGR) - Body ground	Ignition power supply (IG signal)	Ignition switch ON	11 to 14 V
MB-13 (GND1) - Body ground	Ground	Always	Below 1 Ω
MB-14 (GND2) - Body ground	Ground	Always	Below 1 Ω
MB-2 (FLCY) - Body ground	Front door courtesy light switch assembly (LH) input	Front door LH closed	10 kΩ or higher
MB-2 (FLCY) - Body ground	Front door courtesy light switch assembly (LH) input	Front door LH open	Below 1 Ω
MB-4 (FRCY) - Body ground	Front door courtesy light switch assembly (RH) input	Front door RH closed	10 kΩ or higher
MB-4 (FRCY) - Body ground	Front door courtesy light switch assembly (RH) input	Front door RH open	Below 1 Ω
MB-6 (LCTY) - Body ground	Rear door courtesy light switch assembly (LH) input	Rear door LH closed	10 kΩ or higher
MB-6 (LCTY) - Body ground	Rear door courtesy light switch assembly (LH) input	Rear door LH open	Below 1 Ω
MB-1 (RCTY) - Body ground	Rear door courtesy light switch assembly (RH) input	Rear door RH closed	10 kΩ or higher
MB-1 (RCTY) - Body ground	Rear door courtesy light switch assembly (RH) input	Rear door RH open	Below 1 Ω
I85-27 (HCTY) - Body ground	Engine hood courtesy switch input	Engine hood open	10 kΩ or higher
I85-27 (HCTY) - Body ground	Engine hood courtesy switch input	Engine hood closed	Below 1 Ω
8F-2 (BCTY) - Body ground	Back door courtesy light switch input	Back door closed	10 kΩ or higher
8F-2 (BCTY) - Body ground	Back door courtesy light switch input	Back door open	Below 1 Ω

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

Click herePower Source / Network>POWER DISTRIBUTION>MAIN BODY ECU>INSTALLATION202307,999999,_57,_111968,_0500002,RM100000002BK08,

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

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
I85-9 (LSFL) - Body ground	Front door LH unlock detection switch input	Front door LH unlocked	Below 1 V
I85-9 (LSFL) - Body ground	Front door LH unlock detection switch input	Front door LH locked	Pulse generation
I85-3 (LSFR) - Body ground	Front door RH unlock detection switch input	Front door RH unlocked	Below 1 V
I85-3 (LSFR) - Body ground	Front door RH unlock detection switch input	Front door RH locked	Pulse generation
I85-10 (LSWL) - Body ground	Rear door LH unlock detection switch input	Rear door LH unlocked	Below 1 V
I85-10 (LSWL) - Body ground	Rear door LH unlock detection switch input	Rear door LH locked	Pulse generation
I86-23 (LSWR) - Body ground	Rear door RH unlock detection switch input	Rear door RH unlocked	Below 1 V
I86-23 (LSWR) - Body ground	Rear door RH unlock detection switch input	Rear door RH locked	Pulse generation
I85-28 (L2) - Body ground	Driver door key-linked lock input	Driver door key cylinder turned to lock position	Below 1 V
I85-28 (L2) - Body ground	Driver door key-linked lock input	Driver door key cylinder off	Pulse generation
I85-4 (UL3) - Body ground	Driver door key-linked unlock input	Driver door key cylinder turned to unlock position	Below 1 V
I85-4 (UL3) - Body ground	Driver door key-linked unlock input	Driver door key cylinder off	Pulse generation
8E-4 (SH) - Body ground	Security horn assembly drive	Security horn assembly sounding (Theft deterrent system in alarm sounding state)	Pulse generation (Below 1 V ← → 11 to 14 V)
8E-11 (HORN) - Body ground	Vehicle horns drive	Vehicle horns sounding (Theft deterrent system in alarm sounding state)	Pulse generation (Below 1 V ← → 11 to 14 V)