LIN Communication System

NETWORKING: LIN COMMUNICATION SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
(a) Disconnect the 2A and 2C main body ECU (driver side junction block) connectors.
(b) Disconnect the 2F main body ECU connector.





(c) 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 connectors disconnected.





If the result is not as specified, there may be a malfunction in the wire harness.
(d) Reconnect the 2A and 2C main body ECU (driver side junction block assembly) connectors.
(e) Reconnect the 2F main body ECU (driver side junction block assembly) connector.
(f) Check for pulses according to the value(s) in the table below.





If the result is not as specified, the main body ECU (driver side junction block assembly) may be malfunctioning.
2. CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for DRIVER SIDE)
(a) Disconnect the I4 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 I4 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 H4 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 H4 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 MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
(a) Disconnect the I6 multiplex network 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 I6 multiplex network 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 multiplex network master switch assembly may be malfunctioning.
5. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) [w/ Sliding Roof]
(a) Disconnect the P4 sliding roof ECU (sliding roof drive gear 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 P4 sliding roof ECU (sliding roof drive gear assembly) connector.
(d) Check for pulses according to the value(s) in the table below.





If the result is not as specified, the sliding roof ECU (sliding roof drive gear assembly) may be malfunctioning.
6. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) [w/ Smart Key System]
(a) Disconnect the D25 certification ECU (smart key ECU 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 D25 certification ECU (smart key ECU assembly) connector.
(d) Measure the voltage and check for pulses according to the value(s) in the table below.





If the result is not as specified, the certification ECU (smart key ECU assembly) may be malfunctioning.
7. CHECK POWER MANAGEMENT CONTROL ECU (w/ Smart Key System)
(a) Disconnect the D43 power management control 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.





(c) Reconnect the D43 power management control ECU connector.
(d) Check for pulses according to the value(s) in the table below.





If the result is not as specified, the power management control ECU connector.
8. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) [w/ Smart Key System]
(a) Disconnect the D17 steering lock ECU (steering lock actuator 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 D17 steering lock ECU (steering lock actuator assembly) connector.
(d) Check for pulses according to the value(s) in the table below.





If the result is not as specified, the steering lock ECU (steering lock actuator assembly) may be malfunctioning.