PROCEDURES FOR DETERMINING THE LOCATION OF A MALFUNCTION

System Wiring Diagram

PCM

1. Check the display of DTC U0121 and/or U0155, using the SST (WDS or equivalent). (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

2. Referring to the following table, determine the malfunctioning part of the CAN system.

EPS Control Module

1. Check the display of DTC U1900, using the SST (WDS or equivalent). (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

• Wiring harness 1

• Wiring harness 2

• Wiring harness 3

• Wiring harness 5

• PCM

• DSC HU/CM

• EPS control module

DSC HU/CM

1. Check the display of DTC U1900, using the SST (WDS or equivalent). (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

• Wiring harness 1

• Wiring harness 3

• Wiring harness 5

• Wiring harness 6

• Wiring harness 8

• Wiring harness 11

• PCM

• Steering angle sensor

• DSC HU/CM

TCM

1. Check the display of DTC U0100, using the SST (WDS or equivalent). (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

• Wiring harness 1

• Wiring harness 3

• Wiring harness 4

• PCM

• TCM

Keyless Unit

1. Check the display of DTC U1900, using the SST (WDS or equivalent). (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

• Wiring harness 1

• Wiring harness 3

• Wiring harness 6

• Wiring harness 7

• PCM

• Keyless unit

Steering Angle Sensor

1. Check the display of DTC U1900, using the SST (WDS or equivalent). (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

• Wiring harness 9

• DSC HU/CM

• Steering angle sensor

Instrument Cluster

1. Access and monitor the "PCM_MSG", "EPS_MSG", "TCM_MSG" and "ABS_MSG" of PID using the SST (WDS or equivalent).

2. Referring to the PID/DATA MONITOR, confirm the display status of the PID. (See PID/DATA MONITOR TABLE [MULTIPLEX COMMUNICATION SYSTEM].)

3. Referring to the following table, determine the malfunctioning part of the CAN system.