CHARGING SYSTEM, Diagnostic DTC:P1602

DTC Code DTC Name
P1602 Deterioration of Battery

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

P1602

Deterioration of Battery

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

WIRING DIAGRAM

A316097E07

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 hereClick here

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE CHARGING SYSTEM

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

    1. C267933C25

      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the A62 ECM connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      A62-1 (BATT) - Body ground

      Always

      11 to 14 V

    Result

    Result

    OK

    NG
    OK

    CHECK FOR INTERMITTENT PROBLEMS

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR