CHARGING SYSTEM, Diagnostic DTC:P16027B

DTC Code DTC Name
P16027B Deterioration of Battery Low Fluid Level

DESCRIPTION

The battery condition is calculated from the voltage when the engine is running (except when cranking) and then output to the ECM. A DTC is output when battery degradation is determined based on this signal.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory Note
P16027B Deterioration of Battery Low Fluid Level

Diagnosis condition: Engine running (except when cranking)

Malfunction status: Battery capacity is abnormally low for 10 seconds or more.

Other: 1 trip

  • Battery

  • Wire harness or connector

 Not displayed DTC stored SAE: P1602

WIRING DIAGRAM

B006E3OE02
*a ENG
*b EFI-MAIN NO. 1
*c EFI NO. 2
*d Battery

CAUTION / NOTICE / HINT

Note

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

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 OF ECM)


    1. Disconnect the ECM connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      D2-1 (BATT) - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR