Pinout Values and Diagnostic Parameters

WIPER / WASHER: WIPER AND WASHER SYSTEM: TERMINALS OF ECU

1. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY





(a) Disconnect the G50 windshield wiper switch connector.

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





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

(c) Reconnect the G50 windshield wiper switch assembly connector.

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





If the result is not as specified, the windshield wiper switch assembly may have a malfunction.

(e) Using an oscilloscope, check waveform 1.





Waveform 1 (Reference)





2. CHECK HEADLIGHT CLEANER CONTROL RELAY (w/ Headlight Cleaner System)





(a) Disconnect the A32 headlight cleaner control relay connector.

(b) Measure the voltage and resistance 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.

3. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)





(a) Remove the main body ECU (multiplex network body ECU) Removal.

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

HINT
Measure the values on the wire harness side with the connector disconnected.





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

(c) Install the main body ECU (multiplex network body ECU) Installation.

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





If the result is not as specified, the main body ECU (multiplex network body ECU) or driver side junction block assembly may have a malfunction.

(e) Using an oscilloscope, check waveform 1.





Waveform 1 (Reference)





(f) Using an oscilloscope, check waveform 2.





Waveform 2 (Reference)





(g) Using an oscilloscope, check waveform 3.





Waveform 3 (Reference)





(h) Using an oscilloscope, check waveform 4.





Waveform 4 (Reference)