Navigation System (for HDD)

NAVIGATION: NAVIGATION SYSTEM (for HDD): TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK DISPLAY AND NAVIGATION ASSEMBLY





(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/o LEXUS Link System
*2: w/ Rear View Monitor System
*3: w/ Advanced Parking Guidance System
*4: w/o Advanced Parking Guidance System
*5: w/ Rear Seat Entertainment System
- If the result is not as specified, the display and navigation assembly may have a malfunction.





(e) Using an oscilloscope, check the waveform 1.










(f) Using an oscilloscope, check the waveform 2.






2. 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 controller connector.
(d) Measure the voltage according to the value(s) in the table below.





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

3. 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 controller connector.
(d) Measure the voltage according to the value(s) in the table below.





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

4. CHECK SATELLITE RADIO TUNER (w/ SDARS System)





(a) Disconnect the R27 tuner 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 R27 tuner connector.
(d) Measure the voltage according to the value(s) in the table below.









HINT:
*1: w/ Disc Player
*2: w/ Rear Seat Entertainment System
*3: w/o Rear Seat Entertainment System
- If the result is not as specified, the tuner may have a malfunction.

5. CHECK RADIO RECEIVER Pinout Values and Diagnostic Parameters
6. CHECK STEREO COMPONENT AMPLIFIER Pinout Values and Diagnostic Parameters