Diesel Data: Automotive Repair

With Generic Scan Tool

DTC CHECK

1. CHECK DTC (HV ECU)




a. Connect the hand-held tester or the OBD II scan tool to the DLC3.
b. Turn the power switch ON (IG) and turn the hand-held tester or the OBD II scan tool ON.
c. Using the hand-held tester or the OBD II scan tool, check the DTCs and freeze frame data and then write them down.

For the OBD II scan tool, see its instruction manual.

d. See Trouble Code Descriptions to confirm the details of the DTCs.

2. CHECK DTC (SYSTEMS OTHER THAN HV ECU)

HINT: The HV control ECU maintains mutual communication with the computers, including the ECM, battery ECU, skid control ECU, power steering ECU and others. Therefore, if the HV control ECU outputs a warning, it is necessary to check and record the DTCs of all the systems.

a. Connect the hand-held tester or the OBD II scan tool to the DLC3.
b. Turn the power switch ON (IG) and turn the hand-held tester or the OBD II scan tool ON.
c. For the OBD II scan tool, see its instruction manual.

d. If DTCs are present, check the relevant systems.

HINT: If DTCs for the CAN communication system are present in addition to other DTCs, first troubleshoot and repair any malfunctions in the CAN communication.