A25A-FKS (BATTERY / CHARGING): CHARGING SYSTEM: P16027B; Deterioration of Battery Low Fluid Level; 2019 MY RAV4 [11/2018

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000001ESSB
Model Year Start: 2019	Model: RAV4	Prod Date Range: [11/2018 - 10/2019]
Title: A25A-FKS (BATTERY / CHARGING): CHARGING SYSTEM: P16027B; Deterioration of Battery Low Fluid Level; 2019 MY RAV4 [11/2018 - 10/2019]

DTC

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)

Charge warning light does not come on

DTC stored

SAE Code: P1602

NOTICE:

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

HINT:

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

1.	CHECK CHARGING SYSTEM

(a) Check the charging system.

Click here

REPAIR OR REPLACE CHARGING SYSTEM

2.	CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

(a) Disconnect the A24 ECM connector.

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
A24-1 (BATT) - Body ground	Always	11 to 14 V

*a	Front view of wire harness connector (to ECM)

REPAIR OR REPLACE HARNESS OR CONNECTOR