P0AF8

L110F HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P0AF8-816: Hybrid Battery System Voltage
P0AF8-816 - Hybrid Battery System Voltage

DESCRIPTION





MONITOR DESCRIPTION

If the battery smart unit detects an abnormal decrease in the voltage of the HV battery, the hybrid vehicle control ECU will turn on the MIL and set a DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





COMPONENT OPERATING RANGE





CONFIRMATION DRIVING PATTERN

1. Connect the Techstream to the DLC3.

2. Turn the power switch on (IG) and turn the Techstream on.

3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

4. Turn the power switch off.

5. Turn the power switch on (READY).

6. Move the shift lever to D and leave the vehicle as is for several minutes.

7. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

8. Check that the permanent DTCs are cleared.

9. If the permanent DTCs are not cleared, perform a universal trip, and then check for permanent DTCs again.

HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

(d) Check if DTCs are output.

Result:





B -- GO TO DTC CHART Hybrid Control System
A -- Continue to next step.

2. CHECK ENGINE START

(a) Turn the power switch on (READY).

(b) Check if the engine starts.

HINT
Depressing the accelerator pedal with the shift lever in the P position will cause the engine to start.

Result:





B -- REPLACE HV BATTERY ASSEMBLY Components

A -- LEAVE VEHICLE IN P POSITION, AND CHARGE HV BATTERY IN IDLE STATUS UNTIL IDLING STOPS