LIN Communication System

MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: TERMINALS OF ECU

1. CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the E6, E7 and E8 main body ECU connectors.





(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.

(c) Reconnect the E6, E7 and E8 main body ECU connectors.

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





If the result is not as specified, the main body ECU (Instrument panel junction block assembly) may have a malfunction.

2. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for DRIVER SIDE)

(a) Disconnect the I8 power window regulator motor assembly (for driver side) connector.





(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) Reconnect the I8 power window regulator motor assembly (for driver side) connector.

(d) Check for pulses according to the value(s) in the table below.





If the result is not as specified, the power window regulator motor assembly (for driver side) may be malfunctioning.

3. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for FRONT PASSENGER SIDE)

(a) Disconnect the H9 power window regulator motor assembly (for front passenger side) connector.





(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) Reconnect the H9 power window regulator motor assembly (for front passenger side) connector.

(d) Check for pulses according to the value(s) in the table below.





If the result is not as specified, the power window regulator motor assembly (for front passenger side) may be malfunctioning.

4. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR RH SIDE)

(a) Disconnect the J7 power window regulator motor assembly (for rear RH side) connector.





(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) Reconnect the J7 power window regulator motor assembly (for rear RH side) connector.

(d) Check for pulses according to the value(s) in the table below.





If the result is not as specified, the power window regulator motor assembly (for rear RH side) may be malfunctioning.

5. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR LH SIDE)

(a) Disconnect the K7 power window regulator motor assembly (for rear LH side) connector.





(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) Reconnect the K7 power window regulator motor assembly (for rear LH side) connector.

(d) Check for pulses according to the value(s) in the table below.





If the result is not as specified, the power window regulator motor assembly (for rear LH side) may be malfunctioning.

6. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

(a) Disconnect the M2 power window regulator master switch assembly connector.





(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) Reconnect the M2 power window regulator master switch assembly connector.

(d) Check for pulses according to the value(s) in the table below.





If the result is not as specified, the power window regulator master switch assembly may be malfunctioning.

7. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

(a) Disconnect the Q12 ECU connector.





(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 on the wire harness side.

(c) Reconnect the Q12 ECU connector.

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





If the result is not as specified, the ECU may be malfunctioning.