RM35X0E _56 Audio / Visual / Telematics _078377 AUDIO / VIDEO _0383454 AUDIO AND VISUAL SYSTEM(for Radio Receiver Type) J

AUDIO / VIDEO  AUDIO AND VISUAL SYSTEM(for Radio Receiver Type)  Dimmer Signal Circuit  


DESCRIPTION

The main body ECU (multiplex network body ECU) sends an auto dimmer signal to the radio receiver assembly via this circuit.

When the radio receiver assembly receives an auto dimmer signal from the main body ECU (multiplex network body ECU), the radio receiver assembly causes the instrument panel illumination to be dimmed.

WIRING DIAGRAM

E408091E07
5.448,2.719 7.115,3.01 1.667,0.292 10 false Radio Receiver Assembly 0.708,2.688 2.896,3.26 2.188,0.573 10 false Main Body ECU (Multiplex Network Body ECU) 1.302,1.552 1.792,1.75 0.49,0.198 10 false ACAN 5.51,1.563 6.031,1.76 0.521,0.198 10 false ADIM 5.458,2.542 5.885,2.76 0.427,0.219 10 false O12 5.25,1.427 5.448,1.615 0.198,0.188 10 false 3 1.833,1.417 2.031,1.604 0.198,0.188 10 false 8 0.729,2.51 1.156,2.729 0.427,0.219 10 false N19

PROCEDURE

1.CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
a.

Disconnect the radio receiver assembly connector.


b.
E408087C03
1.5,0.521 1.917,0.833 0.417,0.313 0.729,1.125 0.906,1.125 0.906,1.125 1.052,1.802 true 1.594,0.594 2.052,0.792 0.458,0.198 10 false O12 0.083,0.083 0.542,0.281 0.458,0.198 10 false *a 0.354,1.042 0.813,1.24 0.458,0.198 10 false ADIM
*a Front view of wire harness connector
(to Radio Receiver Assembly)


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

Standard Voltage:
Tester Connection Condition Specified Condition
O12-3 (ADIM) - Body ground Ignition switch ON, automatic light control sensor covered by hand, and light control switch in AUTO position 11 to 14 V



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

Click hereAudio / Visual / Telematics>AUDIO / VIDEO>AUDIO AND VISUAL SYSTEM (for Radio Receiver Type)>PROBLEM SYMPTOMS TABLE


NG

2.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])
2.CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU])
a.

Disconnect the N19 main body ECU (multiplex network body ECU) connector.


b.

Disconnect the O12 radio receiver assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N19-8 (ACAN) - O12-3 (ADIM) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR