Pinout Values and Diagnostic Parameters
TERMINALS OF ECU1. MULTIPLEX NETWORK MASTER SWITCH
a. Disconnect the P22 switch connector.
b. Measure the voltage and resistance of each terminal according to the value(s) in the table given.
If the result is not as specified, there may be a malfunction on the wire harness side.
c. Reconnect the P22 switch connector and reset the power window motor.
Part 1:
Part 2:
d. Measure the voltage according to the value(s) in the table given.
2. CHECK MULTIPLEX NETWORK SWITCH (FRONT PASSENGER SIDE)
a. Disconnect the P19 switch connector.
b. Measure the voltage and resistance according to the value(s) in the table given.
If the result is not as specified, there may be a malfunction on the wire harness side.
c. Reconnect the P19 switch connector and reset power window motor.
Part 1:
Part 2:
d. Measure the voltage according to the value(s) in the table given.
If the result is not as specified, the multiplex network switch may have a malfunction.
3. CHECK MULTIPLEX NETWORK SWITCH (REAR LH)
a. Disconnect the P20 switch connector.
b. Measure the voltage and resistance according to the value(s) in the table shown.
c. Reconnect the P20 switch connector and reset the power window motor.
d. Measure the voltage according to the value(s) in the table shown.
If the result is not as specified, the multiplex network switch may have a malfunction.
4. CHECK MULTIPLEX NETWORK SWITCH (REAR RH)
a. Disconnect the P21 switch connector.
b. Measure the voltage and resistance according to the value(s) in the table shown.
c. Reconnect the P21 switch connector and reset the power window motor.
d. Measure the voltage according to the value(s) in the table shown.
If the result is not as specified, the multiplex network switch may have a malfunction.
5. CHECK INSTRUMENT PANEL J/B (BODY ECU)
a. Disconnect the B4, B5 and B6 ECU connectors.
b. Disconnect the 1F and 1M J/B connectors.
Part 1:
Part 2:
c. Measure the resistance according to the value(s) in the table shown.
If the result is not as specified, there may be a malfunction on the wire harness side.
d. Reconnect the B4, B5 and B6 ECU connectors.
e. Reconnect the 1M and 1F J/B connectors.
f. Measure the voltage according to the value(s) in the table shown.
If the result is not as specified, the instrument panel J/B (body ECU) may have a malfunction.