Code No.P1AF9: Quick charger initial check timeout
Code No.P1B02: Quick charge current stop timeout
Code No.P1B03: Quick charge stop process timeout



caution
  • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be stored. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnostics Table ).
  • Whenever ECU is replaced, ensure that the CAN bus lines are normal.

TROUBLE JUDGEMENT


The PHEV-ECU stores the relevant diagnosis code below when a quick charger times out at a respective stage below:

  1. Initial check: Code No. P1AF9
  2. Current shut down: Code No. P1B02
  3. Termination process: Code No. P1B03

PROBABLE CAUSES



  • Damaged harness or connector
  • Malfunction of quick charger
  • Malfunction of PHEV-ECU

DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III CAN bus diagnostics


Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ). On completion, go to Step 2.

STEP 2. Check whether the diagnosis code is stored again.


Recheck if the diagnosis code is stored.
(1)Erase the diagnosis code.
(2)Turn on the power supply mode of the electric motor switch.
(3)Check if the diagnosis code is stored.

Q. Is the diagnosis code stored?

Go to Step 3.
The procedure is complete.

STEP 3. M.U.T.-III data list


Check that the following data list display contents are normal (Refer to ).
Data list
  • Item 96: Quick charge contactor (+)
  • Item 97: Quick charge contactor (-)
  • Item 98: Quick charge contactor (+) diag
  • Item 99: Quick charge contactor (-) diag
Check condition
Normal condition
Quick charging is being performed
ON
Other than above
OFF

  • Item236: Quick charger connect. judgement
Check condition
Normal condition
Quick charging connector connected
ON
Quick charging connector not connected
OFF

  • Item262: Quick charger function
Check condition
Normal condition
A quick charger cannot be used or identified.
NG
A quick charger can be used.
OK

Q. Is the check result normal?

Check the quick charger. Then go to Step 6.
Go to Step 4.

STEP 4. Voltage measurement at the PHEV-ECU connector.


(1)Measure by backprobing without disconnecting the PHEV-ECU connector.
(2)Voltage between S2, CNTF, CNEH, CNEL. CINH terminal and body earth
OK: 1V or less

Q. Is the check result normal?

Check the quick charger. Then go to Step 7.
Go to Step 5.

STEP 5. Check the power supply line for open and short circuit (Quick charger and PHEV-ECU).



  • Check the wiring harness quick charger connector terminal No.10, 3, 8, 9, 6, 7 and PHEV-ECU (S2, CNTF, CNEH, CNEL. CINH terminal) connector.

Q. Is the check result normal?

Go to Step 6.
Repair the connector or wiring harness.

STEP 6. Resistance measurement at the PHEV-ECU connector.


caution Always use a digital multimeter to check a resistance as an accurate value must be measured.
(1)Remove the PHEV-ECU, and measure at the component side.
(2)Resistance between CNEH, CNEL terminal and body earth
OK: 120 ± 20 Ω
caution Strictly observe the specified wiring harness repair procedure.

Q. Is the check result normal?

Go to Step 7.
Replace the PHEV-ECU.

STEP 7. Check whether the diagnosis code is stored again.


Recheck if the diagnosis code is stored.
(1)Erase the diagnosis code.
(2)Turn on the power supply mode of the electric motor switch.
(3)Check if the diagnosis code is stored.

Q. Is the diagnosis code stored?

Replace the PHEV-ECU (Refer to ).
The procedure is complete.