Collision Avoidance - Blind Spot Message, DTC C1AB4/C1AB5

T-SB-0039-13

March 6, 2013

Blind Spot Monitor DTC C1AB4/C1AB5

Service Category
Audio/Visual/Telematics

Section
Park Assist/Monitoring

Market
USA





Applicability

Introduction

Some 2013 model year Avalon and Avalon HV vehicles may display a "Check Blind Spot Monitor System" message on the multi-information display with Diagnostic Trouble Code (DTC) C1AB4 and/or C1AB5 stored. The procedure in this bulletin has been developed to address this condition.

Production Change Information





This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs shown below.





Warranty Information





Parts Information





Required Tools & Equipment

Inspection Procedure

Using Techstream check for stored DTCs. Confirm one of the following DTCs is present:

^ C1AB4 - Open in Outer Mirror Indicator (Master)

^ C1AB5 - Open in Outer Mirror Indicator (Slave)

If DTC C1AB4 or C1AB5 is stored as a current or history DTC complete the Repair Procedure to BOTH outer side rear view mirror assemblies.

If DTC C1AB4 or C1AB5 is NOT stored as current or history STOP! This bulletin does NOT apply.





Refer to the Technical Information System (TIS) applicable model and model year Repair Manual:

Repair Procedure

The following repair procedure will instruct how to remove the Blind Spot Monitor indicator ground circuit from the harness and splice it into the Mirror Heater ground circuit.

NOTE

^ Use the same procedure for both the RH and LH sides. The procedure described below is for the LH side.

1. Remove outer rear view mirror cover.





Refer to TIS applicable model and model year Repair Manual:





2. Remove the tape from the two wire Blind Spot Monitor (BSM) indicator wire harness.





3. Measure 20 mm (0.79 in.) from the junction of the mirror harness and cut the YELLOW wire.





4. Remove 8 mm (0.32 in.) of insulation from the end of the YELLOW BSM indicator ground wire leading to the connector.





5. Install a barrel sleeve onto the end of the indicator ground wire.





6. Place the sleeve into the 1.25 mm (0.05 in.) crimp die of the SST





7. With the sleeve correctly placed in the SST and wire fully inserted into the sleeve crimp one side of the sleeve in the area shown by closing the handles fully until they release. Crimp the sleeve onto the BSM indicator ground wire.





8. Install thermo tubing onto the BSM indicator ground wire.





9. Locate the Mirror Heater ground wire (Brown w/ Yellow). Measure 30 mm (1.18 in.) from the wire harness junction and cut the wire.





10. Remove 8 mm (0.32 in.) of insulation from both cut ends of the Mirror Heater ground wire.





11. Insert both ends of the Mirror Heater ground wire (Brown w/Yellow) into the remaining open end of the barrel sleeve and crimp using the SST





12. Lightly tug on each connection to ensure that the wire is securely crimped.





13. Position the thermo tube 8 mm (0.32 in.) past the end of the barrel sleeve.





14. Using a heat gun heat the thermo tubing until it shrinks and seals the repaired connection.

15. Use the thermo tube to seal the cut end of the BSM ground wire at the wire harness junction.

A. Cut a thermo tube in the center to make two 30 mm (1.18 in.) pieces. (Use one piece for each side.)





B. Place thermo tube on cut wire end leaving the tube extending 8 mm (0.32 in.) past the end of the wire.

C. Using a heat gun heat the thermo tubing until it shrinks and seals the wire end.

NOTICE

^ When using the heat gun, keep the heat gun about 100 mm (0.39 in.) to 200 mm (7.8 in.) from the thermo tubing.

^ Protect the surrounding areas (i.e., mirror assembly, interior panels, and door) from heat damage.

NOTE

During the sealing process, adhesive may seep from the thermo tubing. This is a normal condition and part of the sealing properties of the thermo tube.





16. Insulate the BSM indicator wire harness by wrapping with electrical tape.

17. Install outer rear view mirror cover.





Refer to TIS applicable model and model year Repair Manual:

18. Verify Blind Spot Monitor Mirror indicators operate normally.

19. Clear Blind Spot Monitor System DTCs with Techstream.

© 2013 Toyota Motor Sales, USA