DTC    P1602    Deterioration of Battery

for Preparation Click here


DESCRIPTION

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

P1602 
DTC Detection Drive Pattern
DTC Detection Condition
Trouble Area
Wait 70 seconds after starting the engine
After 60 seconds or more elapse after the engine is started and while the engine is running, the battery voltage drops below 11.85 V for 9.6 seconds or more.
(1 trip detection logic)
  1. Battery
  2. Charging system

INSPECTION PROCEDURE

1.CHECK CHARGING SYSTEM
  1. Check the charging system (Click here).



NG
Go to step 3
OK


2.CHECK ECM POWER SOURCE CIRCUIT
  1. Check the ECM power source circuit (Click here).



NEXT
Go to step 4

3.REPAIR OR REPLACE CHARGING SYSTEM
  1. Repair or replace charging system.



NEXT
Go to step 4

4.CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
  1. Connect the intelligent tester to the DLC3.

  1. Clear the DTCs (Click here).

  1. Start the engine.

  1. Wait for 70 seconds or more.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Confirm that the DTC is not output again.


NEXT

END