Pinout Values and Diagnostic Parameters

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK DISPLAY AND NAVIGATION ASSEMBLY*1, (MULTI-DISPLAY*2)
HINT:
- *1: w/ Navigation system for HDD
- *2: w/ Navigation system for DVD or w/o Navigation system (w/ Multi-display)





(a) Disconnect the L59 display connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.





- If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Reconnect the L59 display connector.
(d) Measure the voltage according to the value(s) in the table below.









HINT:
- *1: w/ Navigation system for HDD
- *2: w/ Rear Seat Entertainment System
- *3: w/ Advanced Parking Guidance System
- *4: w/o Advanced Parking Guidance System
- *5: w/o LEXUS Link System
- If the result is not as specified, the multi-display may have a malfunction.

2. CHECK RADIO RECEIVER





(a) Disconnect the L51 receiver connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.





- If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Reconnect the L51 receiver connector.
(d) Measure the resistance and voltage according to the value(s) in the table below.













HINT: *: w/ Rear Seat Entertainment System
#: There is no wire color information.
- If the result is not as specified, the receiver may have a malfunction.





(e) Using an oscilloscope, check the waveform.






3. CHECK STEREO COMPONENT AMPLIFIER





(a) Disconnect the R34 and R38 amplifier connectors.
(b) Measure the resistance and voltage according to the value(s) in the table below.





- If the result is not as specified, there may be a malfunction on the wire harness.

(c) Reconnect the R34 and R38 amplifier connectors.
(d) Measure the voltage according to the value(s) in the table below.









HINT: #: There is no wire color information.
- If the result is not as specified, the amplifier may have a malfunction.

4. CHECK REAR POWER SEAT MODULE SWITCH (except Ottoman)





(a) Disconnect the z54 module connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.





- If the result is not as specified, there may be a malfunction on wire harness side.

(c) Reconnect the z54 module connector.
(d) Measure the voltage according to the value(s) in the table below.





- If the result is not as specified, the controller may have a malfunction.

5. CHECK REAR POWER SEAT MODULE SWITCH (for Ottoman)





(a) Disconnect the S15 module connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.





- If the result is not as specified, there may be a malfunction on wire harness side.

(c) Reconnect the S15 module connector.
(d) Measure the voltage according to the value(s) in the table below.





- If the result is not as specified, the module may have a malfunction.