Can Bus Diagnostics Table
CAUTION:
A diagnostic trouble code may not also be set in the CAN-B lines under the conditions below. If no diagnostic trouble code has been set due to electrical noise, confirm diagnostic item 26
DIAGNOSTIC ITEM 26: SHORT TO POWER SUPPLY OR GROUND, OPEN CIRCUIT OR LINE-TO-LINE SHORT IN THE CAN-B BUS LINES. .
- Open circuit at the CAN_H side of the CAN-B bus lines
- Open circuit at the CAN_L side of the CAN-B bus line
- Short to ground at the CAN_H side of the CAN-B bus line
CAUTION:
During diagnosis, a diagnostic trouble code associated with another system may be set when the ignition switch is turned on with connector(s) disconnected. After completing the repair, confirm all systems for diagnostic trouble code(s). If diagnostic trouble code(s) are set, erase them all.
This diagnosis applies only to the CAN bus lines. If a different system is defective, proceed to the applicable diagnosis section for each system. Observe the diagnosis procedure below only when the CAN bus line is defective.
COMMUNICATION CHART
| Scan tool screen (The ECUs that are not adopted are not displayed). | Comment | Diagnosis detail | Reference page |
|---|---|---|---|
| Short circuit to battery in red displayed area is estimated. | Diagnostic item 1 Diagnose when the scan tool cannot receive the data sent by ETACS-ECU | CAN BUS DIAGNOSTICS | |
| Grounding in red displayed area is estimated. | Diagnostic item 2 Malfunction of the ETACS-ECU | DIAGNOSTIC ITEM 2: MALFUNCTION OF THE ETACS-ECU | |
| CAN-C: A bus-off failure is present in the gateway ECU. | Diagnostic item 3 Abnormal short between the CAN-C bus lines | DIAGNOSTIC ITEM 3: ABNORMAL SHORT BETWEEN THE CAN-C BUS LINES | |
| CAN-C: Grounding in red displayed area is estimated | Diagnostic item 4 Diagnose shorts in the ground to CAN-C bus line | DIAGNOSTIC ITEM 4: DIAGNOSE SHORTS IN THE GROUND TO CAN-C BUS LINE | |
| CAN-C: Short circuit to battery in red displayed area is estimated | Diagnostic item 5 Diagnose shorts in the power supply to CAN-C bus line | DIAGNOSTIC ITEM 5: DIAGNOSE SHORTS IN THE POWER SUPPLY TO CAN-C BUS LINE | |
| CAN-C: Disconnection in red displayed area is estimated. | Diagnostic item 6 Diagnose when the scan tool cannot receive the data sent by AWD-ECU <4WD> | DIAGNOSTIC ITEM 6: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY AWD-ECU <4WD> | |
| CAN-C: Disconnection in red displayed area is estimated. | Diagnostic item 7 Diagnose when the scan tool cannot receive the data sent by steering wheel sensor < vehicles with ASC> | DIAGNOSTIC ITEM 7: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY STEERING WHEEL SENSOR < VEHICLES WITH ASC> | |
| CAN-C: Disconnection in red displayed area is estimated. | Diagnostic item 8 Diagnose when the scan tool cannot receive the data sent by TCM | DIAGNOSTIC ITEM 8: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY TCM | |
| CAN-C: Disconnection in red displayed area is estimated. | Diagnostic item 9 Diagnose when the scan tool cannot receive the data sent by ABS-ECU < vehicles without ASC> | DIAGNOSTIC ITEM 9: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY ABS-ECU < VEHICLES WITHOUT ASC> | |
| Diagnostic item 10 Diagnose when the scan tool cannot receive the data sent by ASC-ECU < vehicles with ASC> | DIAGNOSTIC ITEM 10: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY ASC-ECU < VEHICLES WITH ASC> | ||
| CAN-C: Disconnection in red displayed area is estimated. | Diagnostic item 11 Diagnose when the scan tool cannot receive the data sent by ECM | DIAGNOSTIC ITEM 11: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY ECM | |
| CAN-C: Disconnection in red displayed area is estimated. | Diagnostic item 12 Diagnose the lines between the ETACS-ECU and joint connector (CAN2) | DIAGNOSTIC ITEM 12: DIAGNOSE THE LINES BETWEEN THE ETACS-ECU AND JOINT CONNECTOR (CAN2) | |
| CAN-C: Disconnection in red displayed area is estimated. | Diagnostic item 13 Diagnose the lines between joint connector (CAN2) and joint connector (CAN3) | DIAGNOSTIC ITEM 13: DIAGNOSE THE LINES BETWEEN JOINT CONNECTOR (CAN2) AND JOINT CONNECTOR (CAN3) | |
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 14 Diagnose when the scan tool cannot receive the data sent by combination meter | DIAGNOSTIC ITEM 14: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY COMBINATION METER | |
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 15 Diagnose when the scan tool cannot receive the data sent by KOS-ECU < vehicles with KOS> | DIAGNOSTIC ITEM 15: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY KOS-ECU < VEHICLES WITH KOS> | |
| Diagnostic item 16 Diagnose when the scan tool cannot receive the data sent by WCM < vehicles without KOS> | DIAGNOSTIC ITEM 16: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY WCM < VEHICLES WITHOUT KOS> | ||
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 17 Diagnose when the scan tool cannot receive the data sent by SRS-ECU | DIAGNOSTIC ITEM 17: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY SRS-ECU | |
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 18 Diagnose when the scan tool cannot receive the data sent by occupant classification-ECU | CAN BUS DIAGNOSTICS | |
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 19 Diagnose when the scan tool cannot receive the data sent by A/C-ECU | DIAGNOSTIC ITEM 19: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY A/C-ECU | |
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 20 Diagnose when the scan tool cannot receive the data sent by radio and CD player or radio and CD changer < vehicles without MMCS> | DIAGNOSTIC ITEM 20: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY RADIO AND CD PLAYER OR RADIO AND CD CHANGER < VEHICLES WITHOUT MMCS> | |
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 21 Diagnose when the scan tool cannot receive the data sent by CAN box unit < vehicles with MMCS> | DIAGNOSTIC ITEM 21: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY CAN BOX UNIT < VEHICLES WITH MMCS> | |
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 22 Diagnose when the scan tool cannot receive the data sent by satellite radio tuner < vehicles with satellite radio> | DIAGNOSTIC ITEM 22: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY SATELLITE RADIO TUNER < VEHICLES WITH SATELLITE RADIO> | |
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 23 Diagnose when the scan tool cannot receive the data sent by hands free module < vehicles with hands-free cellular phone system> | DIAGNOSTIC ITEM 23: DIAGNOSE WHEN THE SCAN TOOL CANNOT RECEIVE THE DATA SENT BY HANDS FREE MODULE < VEHICLES WITH HANDS-FREE CELLULAR PHONE SYSTEM> | |
| CAN-B: A failure in the red section, or a bus-off failure is present in the gateway ECU. | Diagnostic item 24 Short to power supply or ground in both CAN_H and CAN_L lines of the CAN-B bus lines. | DIAGNOSTIC ITEM 24: SHORT TO POWER SUPPLY OR GROUND IN BOTH CAN_H AND CAN_L LINES OF THE CAN-B BUS LINES | |
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 25 Diagnose the ETACS-ECU, joint connector (CAN1) or lines between ETACS-ECU and joint connector (CAN1) | DIAGNOSTIC ITEM 25: DIAGNOSE THE ETACS-ECU, JOINT CONNECTOR (CAN1) OR LINES BETWEEN ETACS-ECU AND JOINT CONNECTOR (CAN1) | |
| CAN-B: Disconnection in red displayed area is estimated. | Diagnostic item 26 Short to power supply or ground, open circuit or line-to-line short in the CAN-B bus lines | DIAGNOSTIC ITEM 26: SHORT TO POWER SUPPLY OR GROUND, OPEN CIRCUIT OR LINE-TO-LINE SHORT IN THE CAN-B BUS LINES |