P0868 / INF866

DTC P0868-866 Transmission Fluid Pressure Low
DTC P0868-894 Transmission Fluid Pressure Low

DESCRIPTION

DTC Detection Condition:

The hybrid vehicle transmission assembly uses B1 and B2 brakes to switch between Low and High speeds.

A line pressure circuit, B1 circuit, and B2 circuit are used to control the fluid pressures in the hybrid vehicle transmission assembly.

HINT:
- The timing chart shown is for the first "SHIFT" active test. The chart will differ for the second or later "SHIFT" active test.
- If "Hi" is selected in the first "SHIFT" active test, it may take more time to shift to "Hi".

Wiring Diagram:

Step 1:

Step 1(Continued)-3:

Step 4-5:

Step 6:

Step 7-8:

Step 9:

Step 10:

Step 11:

Step 11(Continued)-12:

Step 13-14:

Step 14(Continued)-16:

Step 16(Continued)-17:

Step 18-19:

Step 19(Continued)-21:

Step 21(Continued)-23:

INSPECTION PROCEDURE

CAUTION:
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting, check the voltage at the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

HINT: Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.