P0AF8

P313 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P0AF8-816: Hybrid Battery System Voltage
P0AF8-816 - Hybrid Battery System Voltage

DESCRIPTION





MONITOR DESCRIPTION

The battery smart unit monitors for an abnormal drop in HV battery voltage. If an abnormal drop in HV battery voltage is detected, 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 ignition switch to ON and turn the Techstream on.

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

4. Turn the ignition switch off.

5. Turn the ignition switch to 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 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 ignition switch to ON.

(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

(d) Check if DTCs are output.

Result:





(e) Turn the ignition switch off.

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

2. CHECK ENGINE START

(a) Turn the ignition switch to ON (READY).

(b) Check if the engine starts.

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

Result:





(c) Turn the ignition switch off.

B -- CHARGE HV BATTERY

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