Code No. P0691: Radiator fan1 relay circuit low
Code No. P0692: Radiator fan1 relay circuit high
Code No. P0693: Radiator fan2 relay circuit low
Code No. P0694: Radiator fan2 relay circuit high



note
  • Display on M.U.T.-III: Radiator fan 1 relay→Designation in workshop manual: Radiator fan relay
  • Display on M.U.T.-III: Radiator fan 2 relay→Designation in workshop manual: Condenser fan relay

TROUBLE JUDGEMENT


The PHEV-ECU stores diagnosis code No. P0691, P0692, P0693 or P0694 when the voltage in the radiator fan relay or the condenser fan relay is abnormal.

PROBABLE CAUSES



  • Damaged harness or connector.
  • Malfunction of radiator fan relay.
  • Malfunction of condenser fan relay.
  • Malfunction of PHEV-ECU

DIAGNOSIS PROCEDURE


STEP 1. Check the fusible link SBF4 and SBF1.


Q. Is the check result normal?

Go to Step 2.
Replace the damaged fusible link. Then go to Step 3.

STEP 2. Check the radiator fan relay, the condenser fan relay, and the fan control relay.


Refer to GROUP 14A- On vehicle service, Cooling fan relay continuity check .

Q. Is the check result normal?

Return to Step 1.
Replace the damaged radiator fan relay (Refer to ). Then go to Step 3.

STEP 3. Check the power supply line for open circuit and short to earth (fusible link and the PHEV-ECU).



  • Radiator fan (Code No. P0691, P0692): Check the wiring harness between fusible link (SBF4) and the PHEV-ECU (RFR1 terminal).
  • Condenser fan (Code No. P0693, P0694): Check the wiring harness between fusible link (SBF1) and the PHEV-ECU (RFR2 terminal).

Q. Is the check result normal?

Go to Step 4.
Repair the connector or wiring harness.

STEP 4. M.U.T.-III actuator test


Refer to .
Actuator test
  • Item No.3: Radiator fan 1
  • Item No.4: Radiator fan 2

Q. Is the check result normal?

It can be assumed that this malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, How to Cope with Intermittent Malfunction ).
Go to Step 5.

STEP 5. 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 trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction ).