Outline
- If the controller area network (CAN) system is malfunctioning, read the DTCs of the following modules, using the WDS or equivalent to determine the malfunctioning system. PCM TCM DSCHU/CM ABSHU/CM Keyless control module Steering angle sensor Instrument cluster
Flow Chart
- Use «FLOW CHART REFERENCE TABLE»(ref-244451-S10860988942006092400000) to verify the cause of the trouble.
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
| 1 | INSPECT DTC INDICATION Using the WDS or equivalent, inspect if DTCs are displayed for the following module: PCM TCM DSC HU/CM ABS HU/CM Keyless control module Steering angle sensor Instrument cluster Are any DTCs displayed? | Yes | Go to the next step. |
| No | Go to Step 5. | ||
| 2 | INSPECT CAN SYSTEM-RELATED DTC Are any DTCs other than the following displayed? U0073 U0100 U0101 U0121 U0155 U0214 U0323 U1900 U2023 U2516 | Yes | Repair the malfunctioning part by following the related DTC inspection. Go to the next step. |
| No | Go to the next step. | ||
| 3 | INSPECT CAN SYSTEM-RELATED DTC Are any of the following DTCs displayed? PCM: U0073, U0101, U0121, U0155 TCM: U0073, U0100 DSC HU/CM: U0073, U0100, U0101, U0155, U1900, U2023 ABS HU/CM: U0073, U1900, U2023 Keyless control module: U0073, U0100, U0323, U2023 Steering angle sensor: U1900, U2516 Instrument cluster: U0073, U0100, U0101, U0121, U0214 | Yes | Repair the malfunctioning part by following the DTC inspection. Go to the next step. |
| No | Troubleshooting completed. | ||
| 4 | VERIFY TROUBLESHOOTING COMPLETED Clear the DTC from the CAN system-related modules using the WDS or equivalent. Start the engine. Are any of the CAN related DTCs displayed? | Yes | Go back to Step 3. |
| No | Troubleshooting completed. | ||
| 5 | INSPECT COMMUNICATION CONDITION Is there a response from the following modules? PCM TCM DSC HU/CM ABS HU/CM Keyless control module Steering angle sensor Instrument cluster | Yes | Troubleshooting completed. |
| No | Go to the next step. | ||
| 6 | INSPECT MODULES THAT DO NOT RESPOND Inspect the power supply and the ground circuit for any units that do not respond. Are they normal? | Yes | Go to the next step. |
| No | Repair the malfunctioning part, then go back to Step 1. | ||
| 7 | INSPECT CONNECTOR AND WIRING HARNESS BETWEEN MODULES THAT DO NOT RESPOND AND DLC-2 Turn the ignition switch to the LOCK position. Inspect the wiring harness and connector between any module that does not respond and the DLC-2. PCM-DLC-2 1AM-F 1AI-E TCM-DLC-2 1G-F 1C-E DSC HU/CM-DLC-2 X-F W-E ABS HU/CM-DLC-2 Z-F Y-E Keyless control module-DLC-2 4AA-F 4Z-E Steering angle sensor-DLC-2 E-F F-E Instrument cluster-DLC-2 1J-F 1L-E Is there any malfunction? | Yes | Repair the malfunctioning part, then go back to Step 1. |
| No | Go to the next step. | ||
| 8 | INSPECT WIRING HARNESS Turn the ignition switch to the ON position (Engine off). Measure the voltage between the following terminals. DLC-2 terminals F and GND DLC-2 terminals E and GND Is the voltage 2.0-3.0 V? | Yes | Go to the next step. |
| No | Go to Step 12. | ||
| 9 | INSPECT WIRING HARNESS Turn the ignition switch to the LOCK position. Measure the resistance between the following terminals. DLC-2 terminals F and E Is the resistance 59-65 ohms? | Yes | Replace the modules that do not respond, then go back to Step 1. |
| No | Go to the next step. | ||
| 10 | INSPECT PCM Disconnect the PCM connector. Measure the resistance between following terminals. PCM terminals 1AM and 1AI (part-side) Is the resistance 118-130 ohms? | Yes | Go to the next step. |
| No | Replace the PCM, then go to the next step. | ||
| 11 | INSPECT INSTRUMENT CLUSTER Disconnect the instrument cluster connector. Measure the resistance between the following terminals. Instrument cluster terminals 1J and 1L (part-side) Is the resistance 118-130 ohms? | Yes | Go to next step. |
| No | Replace the instrument cluster, then go to the next step. | ||
| 12 | CLASSIFY WIRING HARNESS MALFUNCTION OR MODULE MALFUNCTION Turn the ignition switch to the LOCK position. Disconnect the connector of any unit that does not respond. (If there are two or more units that do not respond, disconnect only one of the units.) Turn the ignition switch to the ON position. Measure the voltage between the following terminals. DLC-2 terminals F and GND DLC-2 terminals E and GND Is voltage 2.0-3.0 V? | Yes | Go to the next step. |
| No | Retry this step with other module connector disconnected. If all units that do not respond are disconnected, go to Step 14. | ||
| 13 | INSPECT WIRING HARNESS OF ANY UNIT THAT DOES NOT RESPOND Turn the ignition switch to the LOCK position. Inspect for continuity between the following connector terminals of any disconnected unit. PCM-DLC-2 1AM-other terminals 1AI-other terminals TCM-DLC-2 1G-other terminals 1C-other terminals DSC HU/CM-DLC-2 X-other terminals W-other terminals ABS HU/CM-DLC-2 Z-other terminals Y-other terminals Keyless control module-DLC-2 4AA-other terminals 4Z-other terminals Steering angle sensor-DLC-2 E-other terminals F-other terminals Instrument cluster-DLC-2 1J-other terminals 1L-other terminals Is there continuity? | Yes | Repair or replace the wiring harness, then go back to Step 1. |
| No | Replace the disconnected unit, then go back to Step 1. | ||
| 14 | INSPECT CAN RELATED WIRING HARNESS Inspect the related wiring harnesses (CAN_L and/or CAN_H) for the short circuit (to power supply or ground). Is the wiring harness normal? | Yes | Repair or replace the wiring harness, then go back to Step 1. |
| No | Go back to Step 1. | ||
FLOW CHART REFERENCE TABLE
PCM
- Inspect the display of DTC U0101, U0121 and/or U0155, using the WDS or equivalent. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-244451-S40650496542006092400000) .)
- Referring to «PCM REFERENCE TABLE»(ref-244451-S37368613532006092400000) , determine the malfunctioning part of the CAN system.
| X: Normal -: Communication error | ||||
|---|---|---|---|---|
| Module | Communication status | Malfunction location | ||
| DSC HU/CM ABS HU/CM | TCM | Instrument cluster | ||
| PCM | Wiring harness A PCM | |||
| X | X | Wiring harness C TCM | ||
| X | X | Wiring harness B DSC HU/CM or ABS HU/CM | ||
| X | X | Wiring harness D Wiring harness F Wiring harness H Instrument cluster | ||
PCM REFERENCE TABLE
TCM
- Inspect the display of DTC U0100 using the WDS or equivalent. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-244451-S40650496542006092400000) .)
- Referring to «TCM REFERENCE TABLE»(ref-244451-S19904337932006092400000) , determine the malfunctioning part of the CAN system.
| X: Normal -: Communication error | ||
|---|---|---|
| Module | Communication status | Malfunction location |
| PCM | ||
| TCM | Wiring harness A Wiring harness C TCM PCM | |
TCM REFERENCE TABLE
DSC HU/CM or ABS HU/CM
- Inspect the display of DTC U0100 (DSC), U0101 (DSC), U0155 (DSC), U1900 and/or U2023, using the WDS or equivalent. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-244451-S40650496542006092400000) .)
- Referring to «DSC HU/CM OR ABS HU/CM REFERENCE TABLE»(ref-244451-S37009960952006092400000) , determine the malfunctioning part of the CAN system.
| X: Normal -: Communication error | ||||
|---|---|---|---|---|
| Module | Communication status | Malfunction location | ||
| PCM | TCM | Instrument cluster | ||
| DSC HU/CM or ABS HU/CM | Wiring harness B DSC HU/CM or ABS HU/CM | |||
| X | X | Wiring harness C TCM | ||
| X | X | Wiring harness A PCM | ||
| X | X | Wiring harness D Wiring harness F Wiring harness H Instrument cluster | ||
DSC HU/CM OR ABS HU/CM REFERENCE TABLE
Keyless Control Module
- Inspect the display of DTC U0100, U0323 and/or U2023 using the WDS or equivalent. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-244451-S40650496542006092400000) .)
- Referring to «KEYLESS CONTROL MODULE REFERENCE TABLE»(ref-244451-S10993230572006092400000) , determine the malfunctioning part of the CAN system.
| X: Normal -: Communication error | |||
|---|---|---|---|
| Module | Communication status | Malfunction location | |
| PCM | Instrument cluster | ||
| Keyless control module | Wiring harness E Keyless control module | ||
| X | Wiring harness A Wiring harness D PCM | ||
| X | Wiring harness F Wiring harness H Instrument cluster | ||
KEYLESS CONTROL MODULE REFERENCE TABLE
Steering Angle Sensor
- Inspect the display of DTC U1900 using the WDS or equivalent. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-244451-S40650496542006092400000) .)
- Referring to «STEERING ANGLE SENSOR REFERENCE TABLE»(ref-244451-S36699800292006092400000) , determine the malfunctioning part of the CAN system.
| X: Normal -: Communication error | ||
|---|---|---|
| Module | Communication status | Malfunction location |
| DSC HU/CM | ||
| Steering Angle Sensor | Wiring harness B Wiring harness D Wiring harness F Wiring harness G DSC HU/CM Steering Angle Sensor | |
STEERING ANGLE SENSOR REFERENCE TABLE
Instrument Cluster
- Inspect the display of DTC U0100, U0101, U0121, and/or U0214, using the WDS or equivalent. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-244451-S40650496542006092400000) .)
- Referring to «INSTRUMENT CLUSTER REFERENCE TABLE»(ref-244451-S42197684992006092400000) , determine the malfunctioning part of the CAN system.
| X: Normal -: Communication error | |||||
|---|---|---|---|---|---|
| Module | Communication status | Malfunction location | |||
| PCM | TCM | DSC HU/CM ABS HU/CM | Keyless control module | ||
| Instrument cluster | Wiring harness F Wiring harness H Instrument cluster | ||||
| X | Wiring harness D | ||||
| X | X | X | Wiring harness A PCM | ||
| X | X | X | Wiring harness C TCM | ||
| X | X | X | Wiring harness B DSC HU/CM or ABS HU/CM | ||
| X | X | X | Wiring harness E Keyless control module | ||
INSTRUMENT CLUSTER REFERENCE TABLE
Repair Procedure
- Inspect the connector of malfunctioning module. If there is any malfunction, repair or replace the connector.
- Inspect the malfunctioning wiring harnesses as follow: If there is any malfunction, repair or replace the wiring harnesses. If there is no malfunction, replace the malfunctioning module. Short to GND Short to power supply Twisted pair short each other Open circuit
- Make sure to reconnect all disconnected connectors.
- Clear the CAN system related DTCs using the WDS or equivalent.
- Verify if the CAN system related DTCs are displayed using the WDS or equivalent. If the same following DTCs are present, replace the malfunctioning module. U0073 (PCM, TCM, DSC HU/CM, ABS HU/CM, keyless control module, instrument cluster) U2516 (steering angle sensor) If other DTC is present, perform the appropriate DTC inspection. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-244451-S40650496542006092400000) .)