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DTC P1AF9: Quick charger initial check timeout
DTC P1B02: Quick charge current stop timeout
DTC P1B03: Quick charge stop process timeout
 
 
cautionBefore replacing the ECU, ensure that the communication circuit is normal.
 
 
DTC SET CONDITIONS
The PHEV-ECU sets the relevant DTC below when a quick charger times out at a respective stage below:
When the DTC P1AF9 is set.
  • Initial check
When the DTC P1B02 is set.
  • Current shut down
When the DTC P1B03 is set.
  • Termination process
note
  • The PHEV-ECU sets the relevant DTC below:
    • When going to disconnect the quick charging connector
    • Touched the quick charging connector during quick charge carelessly
    • Turn off the charger
 
 
 
PROBABLE CAUSES
  • Damaged harness or connector.
  • Malfunction of the quick charger.
  • Malfunction of the PHEV-ECU.
 
 

 
 
DIAGNOSIS
Required Special Tools
  • MB991223: Wiring harness set
  • MB992006: Extra fine probe
STEP 1. Using scan tool (M.U.T.-IIISE), check the data list. <PHEV-ECU>
Check that the following data list display contents.
  • Item No.17: Quick charger connecting flag
 
Check conditionNormal condition
When quick charging is in progressON
When quick charging is not in progressOFF
  • Item No.19: Quick charge start signal
 
Check conditionNormal condition
When quick charging is in progressON
When quick charging is not in progressOFF
  • Item No.66: Quick charge permission signal
 
Check conditionNormal condition
When quick charging is in progressON
When quick charging is not in progressOFF
Is the check result normal?
Check the quick charger. Then go to Step 3.
Go to Step 2.
 
STEP 2. Check the power supply line for open circuit, short to power supply circuit and short to ground circuit (Quick charger and PHEV-ECU).
Check the wiring harness quick charger connector (terminal No.10, 3, 8, 9, 6, 7) and PHEV-ECU connector (terminal S2, CNTF, CNEH, CNEL, CINH).
Is the check result normal?
Go to Step 3.
Repair the connector or wiring harness.
 
STEP 3. Resistance measurement at the PHEV-ECU connector.
cautionAlways 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 PHEV-ECU connector (terminal CNEH, CNEL) and body ground.
OK: 120 ± 20 Ω
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope with Intermittent Malfunction )
Replace the PHEV-ECU (Refer to ).