DESCRIPTION
The power management control ECU monitors the battery. When the engine is running (not cranking) and the battery voltage drops below a specified level, the ECU determines that there is battery deterioration and stores this DTC.
DTC Code | DTC Detection Condition | Trouble Area |
---|---|---|
P1602 | When the engine is running (not cranking) and all the electrical systems are turned off, the battery voltage is below 11.85 V for 10 seconds or more (1 trip detection logic). |
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WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
CHECK FOR DTC
Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON.
Turn the tester on.
According to the display on the tester, check for DTCs Click here.
Result | ||||||
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|
B |
GO TO DIAGNOSTIC TROUBLE CODE CHART Click here |
A |
CHECK CHARGING SYSTEM
Check the charging system Click here.
Result | |||||||||||
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B |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) Click here |
C |
REPAIR OR REPLACE CHARGING SYSTEM |
A |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
w/ Entry and Start System:
*1 | Rear view of wire harness connector (to Power Management Control ECU) |
Disconnect the D111 power management control ECU connector.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | |||||||
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|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
OK |
USE SIMULATION METHOD TO CHECK Click here
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
w/o Entry and Start System:
*1 | Rear view of wire harness connector (to Power Management Control ECU) |
Disconnect the D104 power management control ECU connector.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
OK |
USE SIMULATION METHOD TO CHECK Click here