Toyota 4Runner manuals

Toyota 4Runner: Backup Battery Degradation (B15EC)

DESCRIPTION

This DTC is stored when the DCM (Telematics Transceiver) detects either of the following conditions.

  • The BUB (Back-Up Battery) charge level becomes less than the criteria.
  • Automatic Collision Notification (ACN) was performed.

When this DTC is stored, the BUB (Back-Up Battery) must be replaced. BUB (Back-Up Battery) degradation DTC B15EC is not reported in the deactive mode.

DTC Code

DTC Detection Condition

Trouble Area

B15EC

The BUB (Back-Up Battery) is deteriorated.

BUB (Back-Up Battery)

CAUTION / NOTICE / HINT

NOTICE:

  • If this DTC is stored, be sure to replace the BUB (Back-Up Battery) with a new one.
  • After the BUB (Back-Up Battery) is replaced, it is necessary to clear this DTC.

PROCEDURE

1.

CHECK FOR DTC

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON and wait for 10 seconds.

(d) Perform "Health Check" and check for current DTCs (See page ).


Result

Result

Proceed to

DTC B15EC is output

A

DTC B15EC is not output

B


A

REPLACE BUB (BACK-UP BATTERY)


B

CHECK FOR INTERMITTENT PROBLEMS

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST NOTICE: In the table below, the valves listed under "Normal Condition" are reference values. Do not depend solely on these reference values when dec ...

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART HINT: If a trouble code is stored during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" bel ...

Other materials about Toyota 4Runner:

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE GENERATOR PULLEY CAP (a) Using a screwdriver, remove the generator pulley cap. 2. REMOVE GENERATOR WITH CLUTCH PULLEY (a) Mount the generator in a vise between aluminum p ...

Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Navigation System / Trouble Codes. (e) Check for DTCs (Click here ). ...

© 2016-2019 | www.to4runner.net

0.0056