CHARGING SYSTEM, Diagnostic DTC:P16027B

DTC Code DTC Name
P16027B Deterioration of Battery Low Fluid Level

DESCRIPTION

The ECM determines the battery status according to the voltage of the BATT terminal while the engine is running (not cranking).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Memory

Note

P16027B

Deterioration of Battery Low Fluid Level

Battery capacity is low for 10 seconds or more when the engine is running (not cranking).

(1 trip detection logic)

  • Battery

  • Wire harness or connector

Charge warning light does not come on

DTC stored

  • SAE Code: P1602

  • w/ Stop and Start System

WIRING DIAGRAM

A350991E03

CAUTION / NOTICE / HINT

Note:

Inspect the fuses for circuits related to this system before performing the following procedure.

Tip:

If any DTCs other than P16027B are output, troubleshoot those DTCs first.

PROCEDURE

  1. CHECK CHARGING SYSTEM

    1. Check the charging system.

      Click here

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE CHARGING SYSTEM

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

    1. Disconnect the A173 ECM connector.

    2. A354486C01

      *a

      Front view of wire harness connector

      (to ECM)

      Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      A173-1 (BATT) - Body ground

      Always

      11 to 14 V

    Result

    Result

    OK

    NG
    OK

    CHECK FOR INTERMITTENT PROBLEMS

    Click hereClick hereClick hereClick here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR