STEP 1. Check the signal line for short to ground (On board charger/DC-DC converter, main drive lithium-ion battery, PHEV-ECU and EV remote-ECU or EV remote-ECU empty connector)
(1) Disconnect the C-41 PHEV-ECU connector, D-34 main drive lithium-ion battery connector, D-208 on board charger/DC-DC converter connector and D-31 EV remote-ECU connector, and measure at the wiring harness side.
(2) Measure the resistance between C-41 PHEV-ECU connector (terminal CHGP) and body ground.OK: No continuity
Is the check result normal?
Go to Step 2. Repair the connector or wiring harness. Then go to Step 7.
STEP 2. Check the signal line for short to ground (On board charger/DC-DC converter).
(1) Disconnect the D-208 on board charger/DC-DC converter connector, and measure at the on board charger/DC-DC converter side.
(2) Measure the resistance between the D-208 on board charger/DC-DC converter connector (terminal CHOT) and body ground.OK: No continuity
(3) Measure the resistance between the D-208 on board charger/DC-DC converter connector (terminal CHOT and terminal CGND).OK: No continuity
Is the check result normal?
Go to Step 3. Replace the on board charger/DC-DC converter (Refer to ). Then go to Step 7.
STEP 3. Check the signal line for short to ground (Main drive lithium-ion battery).
(1) Disconnect the D-34 main drive lithium-ion battery connector, and measure at the main drive lithium-ion battery side.note | Do not disconnect the main drive lithium-ion battery connector other than D-34. |
(2) Measure the resistance between the D-34 main drive lithium-ion battery connector (terminal No.9) and body ground.OK: No continuity
(3) Measure the resistance between the D-34 main drive lithium-ion battery connector (terminal No.9 and terminal No.6).OK: No continuity
Is the check result normal?
Go to Step 5. Go to Step 4.
STEP 4. Check the signal line for short to ground (Main drive lithium-ion battery and sub-battery management unit [BMU (SUB)]).
STEP 5. Test the OBD-II drive cycle.
STEP 6. Test the OBD-II drive cycle.
STEP 7. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 3 . (2) Check the DTC.
Is the DTC set?
Retry the troubleshooting. The procedure is complete.