Electrical - MIL ON/DTC P0A2D/249 Set

T-SB-0068-11

June 28, 2011

MIL "ON" DTC P0A2D1249

Service Category

Engine/Hybrid System

Section
Cooling

Market
USA





Applicability

Introduction

Some 2010 model year Prius vehicles may exhibit a Master Warning Light (MWL) "ON" condition with Diagnostic Trouble Code (DTC) P0A2D/249, Drive Motor "A" Temperature Sensor Open Circuit, detected. This condition may be caused by water exposure to the Engine Relay Block if the Relay Block cover is not properly installed. Please refer to the procedure below to address this condition.





Warranty Information





Required Tools & Equipment

Repair Procedure

1. Remove the engine bay Relay Block cover and inspect inside for signs of water intrusion or contamination.

^ If water intrusion or contamination is present proceed to step 2.

^ If no water intrusion or contamination is present proceed to step 3.

2. If any fuses or relays show any signs of corrosion repair or replace as necessary.





3. Disconnect and inspect connector DA1 at the Relay Block for signs of water intrusion or contamination.

^ If water intrusion or contamination is found clean and dry as needed then proceed to step 4.

^ If no water intrusion or contamination is found proceed to step 4.

4. Reinstall the Relay Block cover and ensure it is properly secured.





A. Secure the rear hooks of the Relay Block cover.





B. Secure the front hook of the Relay Block cover.

5. Using TIS Techstream clear all DTCs and retest. If P0A2D/249 recurs follow the Repair Manual diagnostic procedure.





Refer to the Technical Information System (TIS) 2010 model year Prius Repair Manual: