Outline
- If the controller area network (CAN) system is malfunctioning, read the DTCs of the following modules, using the M-MDS to determine the malfunctioning system. HS-CAN PCM (L3 WITH TC) PCM (LF, L3) TCM (FN4A-EL) TCM (FS5A-EL) EHPAS control module DSC HU/CM (with DSC) ABS HU/CM (with ABS) TPMS control module Instrument cluster MS-CAN Instrument cluster Climate control unit SAS control module Information display PJB
Flowchart (HS-CAN)
- Use the following flowchart to verify the cause of the trouble.
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
| 1 | INSPECT DTC INDICATION Using the M-MDS, inspect if DTCs are displayed for the following module: PCM (L3 WITH TC) PCM (LF, L3) TCM (FN4A-EL) TCM (FS5A-EL) EHPAS control module DSC HU/CM ABS HU/CM TPMS control module Instrument cluster Using the self-diagnostic function, inspect if DTCs are displayed for the following module: Information display 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 U0127 U0131 U0155 U1900 U2012 U2023 U2202 | 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 (L3 WITH TC): U0073, U0121, U0155 PCM (LF, L3): U0073, U0101, U0121, U0155 TCM (FN4A-EL): U0073, U0100, U0121, U0155 TCM (FS5A-EL): U0073, U0100 EHPAS control module: U0073, U0100, U2023 DSC HU/CM: U1900, U2012, U2202 ABS HU/CM: U1900, U2012 TPMS control module: U0073, U0127 Instrument cluster: U0073, U0100, U0101, U0121, U0127, U0131, U2023 | 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 M-MDS. 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 (L3 WITH TC) PCM (LF, L3) TCM (FN4A-EL) TCM (FS5A-EL) EHPAS control module DSC HU/CM ABS HU/CM TPMS control module 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 B-F E-E EHPAS control module-DLC-2 2B-F 2H-E DSC HU/CM-DLC-2 P-F D-E ABS HU/CM-DLC-2 H-F L-E Instrument cluster-DLC-2 1I-F 1K-E | Yes | Go to the next step. |
| No | Repair the malfunctioning part, then go back to Step 1. | ||
| 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 E 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 1I and 1K (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 E 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 1AM-other terminals 1AI-other terminals TCM B-other terminals E-other terminals EHPAS control module 2B-other terminals 2H-other terminals DSC HU/CM P-other terminals D-other terminals ABS HU/CM H-other terminals L-other terminals Instrument cluster 1I-other terminals 1K-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. | ||
DIAGNOSIS PROCEDURE
Flowchart (MS-CAN)
- Use the following flowchart to verify the cause of the trouble.
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
| 1 | INSPECT DTC INDICATION Using the M-MDS, inspect if DTCs are displayed for the following module: Instrument cluster Climate control unit SAS control module Information display PJB Using the self-diagnostic function, inspect if DTCs are displayed for the following module: Information display 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 U0140 U0151 U0155 U0156 U0164 U0181 U0184 U0516 U1900 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? Instrument cluster: U0140, U0151, U2516 Climate control unit: U0140, U0155, U0156, U0516 SAS control module: U0073, U1900 Information display: U0164, U0181, U0184, U2516 PJB: U1900 | 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 M-MDS. 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? Instrument cluster Climate control unit Information display Audio unit (base module) SIRIUS satellite radio unit SAS control module PJB | 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. Instrument cluster-DLC-2 1M-L 1O-K Climate control unit-DLC-2 X-L W-K Information display-DLC-2 J-L L-K Audio unit (base module)-DLC-2 1O-L 1Q-K SIRIUS satellite radio unit-DLC-2 2L-L 2K-K SAS control module-DLC-2 1X-L 1T-K PJB-DLC-2 J-04 D-L J-04 B-K | Yes | Go to the next step. |
| No | Repair the malfunctioning part, then go back to Step 1. | ||
| 8 | INSPECT WIRING HARNESS Turn the ignition switch to the ON position (Engine off). Measure the voltage between the following terminals. DLC-2 terminals L and K 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 L and K 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 PJB connector. Measure the resistance between following terminals. PJB terminals J-04 D and J-04 B (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 1M and 1O (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 L and K 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. Instrument cluster 1M-other terminals 1O-other terminals Climate control unit X-other terminals W-other terminals Information display-DLC-2 J-other terminals L-other terminals Audio unit (base module)-DLC-2 1O-other terminals 1Q-other terminals SIRIUS satellite radio unit-DLC-2 2L-other terminals 2K-other terminals SAS control module 1X-other terminals 1T-other terminals PJB J-04 D-other terminals J-04 B-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. | ||
DIAGNOSIS PROCEDURE
Multiplex Communication System - Wiring Diagram. Scheme 47
PCM
- Inspect the display of DTC U0101, U0121 and/or U0155, using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | ||||
|---|---|---|---|---|
| Communication error | ||||
| Module | Communication status | Malfunction location | ||
| TCM | DSC HU/CM ABS HU/CM | Instrument cluster | ||
| PCM | Wiring harness A PCM | |||
| X | X | Wiring harness B TCM | ||
| X | Wiring harness C Wiring harness E | |||
| X | X | Wiring harness F DSC HU/CM ABS HU/CM | ||
| X | X | Wiring harness G Instrument cluster | ||
COMMUNICATION STATUS CHART
TCM (FN4A-EL)
- Inspect the display of DTC U0100, U0121 and/or U0155, using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | ||||
|---|---|---|---|---|
| Communication error | ||||
| Module | Communication status | Malfunction location | ||
| PCM | DSC HU/CM ABS HU/CM | Instrument cluster | ||
| TCM | Wiring harness B TCM | |||
| X | X | Wiring harness A PCM | ||
| X | Wiring harness C Wiring harness E | |||
| X | X | Wiring harness F DSC HU/CM ABS HU/CM | ||
| X | X | Wiring harness G Instrument cluster | ||
COMMUNICATION STATUS CHART
TCM (FS5A-EL)
- Inspect the display of DTC U0100 using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | ||
|---|---|---|
| Communication error | ||
| Module | Communication status | Malfunction location |
| PCM | ||
| TCM | Wiring harness A Wiring harness B TCM PCM | |
COMMUNICATION STATUS CHART
EHPAS Control Module
- Inspect the display of DTC U0100 and/or U2023, using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .) CAUTION: DTC U2023 may not be cleared during engine starting even if DTC clearing is done using the M-MDS. When clearing DTC U2023, execute with the ignition switch in the ON position (Engine off). NOTE: You may want to check which unit is malfunctioning according to Freeze Frame Data. "Electrical" > "IC Service Function" > "Freeze Frame Data". This function is supported on IDS, not PDS.
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | ||
|---|---|---|
| Communication error | ||
| Module | Communication status | Malfunction location |
| PCM | ||
| EHPAS control module | Wiring harness A Wiring harness C Wiring harness D EHPAS control module PCM | |
COMMUNICATION STATUS CHART
DSC HU/CM or ABS HU/CM
- Inspect the display of DTC U1900 and/or U2202 using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | ||
|---|---|---|
| Communication error | ||
| Module | Communication status | Malfunction location |
| PCM | ||
| DSC HU/CM or ABS HU/CM | Wiring harness A Wiring harness C Wiring harness E Wiring harness F PCM | |
COMMUNICATION STATUS CHART
Instrument Cluster
- Inspect the display of DTC U0100, U0101, U0121, U0127 and/or U0131 using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | ||||||
|---|---|---|---|---|---|---|
| Communication error | ||||||
| Module | Communication status | Malfunction location | ||||
| PCM | TCM | EHPAS control module | DSC HU/CM ABS HU/CM | TPMS control module | ||
| Instrument cluster | Instrument cluster | |||||
| X | X | X | X | Wiring harness A PCM | ||
| X | X | X | X | Wiring harness B TCM | ||
| X | X | X | Wiring harness C | |||
| X | X | X | X | Wiring harness D EHPAS control module | ||
| X | X | Wiring harness E | ||||
| X | X | X | X | Wiring harness F DSC HU/CM ABS HU/CM | ||
| X | X | X | X | TPMS control module | ||
COMMUNICATION STATUS CHART
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 M-MDS.
- Verify if the CAN system related DTCs are displayed using the M-MDS.
- If the same following DTCs are present, replace the malfunctioning module. U0073 (PCM, TCM, EHPAS control module, TPMS control module, instrument cluster) U2012 (DSC HU/CM, ABS HU/CM)
- If other DTC is present, perform the appropriate DTC inspection. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Inspect the display of DTC U0140 and/or U0151 using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | |||
|---|---|---|---|
| Communication error | |||
| Module | Communication status | Malfunction location | |
| PJB | SAS control module | ||
| Instrument cluster | Wiring harness I Instrument cluster | ||
| X | Wiring harness L PJB | ||
| X | Wiring harness K SAS control module | ||
COMMUNICATION STATUS CHART
Climate Control Unit
- Inspect the display of DTC U0140, U0155 and/or U0156 using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | ||||
|---|---|---|---|---|
| Communication error | ||||
| Module | Communication status | Malfunction location | ||
| PJB | Instrument cluster | Information display | ||
| Climate control unit | Wiring harness H Climate control unit | |||
| X | X | Wiring harness L PJB | ||
| X | X | Wiring harness I Instrument cluster | ||
| X | X | Wiring harness M Information display | ||
COMMUNICATION STATUS CHART
SAS Control Module
- Inspect the display of DTC U1900 using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | ||
|---|---|---|
| Communication error | ||
| Module | Communication status | Malfunction location |
| Instrument cluster | ||
| SAS control module | Wiring harness I Wiring harness K SAS control module Instrument cluster | |
COMMUNICATION STATUS CHART
Information Display
- Inspect the display of DTC U0164, U0181 and/or U0184 using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | ||||
|---|---|---|---|---|
| Communication error | ||||
| Module | Communication status | Malfunction location | ||
| Climate control unit | Instrument cluster | Audio unit (base module) | ||
| Information Display | Wiring harness M Information Display | |||
| X | X | Wiring harness H Climate control unit | ||
| X | X | Wiring harness I Instrument cluster | ||
| X | X | Wiring harness J Audio unit (base module) | ||
COMMUNICATION STATUS CHART
PJB
- Inspect the display of DTC U1900 using the M-MDS. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)
- Referring to the following table, determine the malfunctioning part of the CAN system.
| X: Normal | ||
|---|---|---|
| Communication error | ||
| Module | Communication status | Malfunction location |
| Audio unit (base module) Instrument cluster | ||
| PJB | Wiring harness I Wiring harness J Wiring harness L PJB Audio unit (base module) Instrument cluster | |
COMMUNICATION STATUS CHART
- 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 M-MDS.
- Verify if the CAN system related DTCs are displayed using the M-MDS.
- If the same following DTCs are present, replace the malfunctioning module. U0073 (SAS control module) U0516 (climate control unit) U1900 (PJB) U2516 (Instrument cluster)
- If other DTC is present, perform the appropriate DTC inspection. (See «DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM]»(ref-347873-S17004569742009111800000) .)