2ZR-FE BATTERY / CHARGING  CHARGING SYSTEM  P161A  Lost Communication with Alternator  


DESCRIPTION

The ECM communicates with the generator assembly via LIN communication. If a LIN communication error is detected, the ECM stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory
P161A Lost Communication with Alternator Generator assembly or ECM communication stop for about 17 minutes or more with the ignition switch ON.
(1 trip detection logic)
·

Wire harness and connector

·

Generator assembly

·

ECM


Charge warning is not displayed DTC stored

WIRING DIAGRAM

A340530E48
1.51,3.167 5.177,3.365 3.667,0.198 10 false : LIN Communication Line 5.094,2.521 6.323,2.719 1.229,0.198 10 false B64 1.708,2.208 2.167,2.406 0.458,0.198 10 false B61 1.698,2.375 4.448,2.573 2.75,0.198 10 false Generator Assembly 4.885,1.708 5.344,1.906 0.458,0.198 10 false LIN 3.083,1.531 3.24,1.729 0.156,0.198 10 false 2 4.646,1.531 4.958,1.729 0.313,0.198 10 false 61 2.792,1.698 3.25,1.896 0.458,0.198 10 false LIN 5.073,2.688 6.302,2.885 1.229,0.198 10 false ECM

CAUTION / NOTICE / HINT

NOTICE:
·

If the ECM is replaced, register the ECU communication ID for Immobiliser System (Refer to the Service Bulletin for Registration).

·

Make sure to perform Reset Memory (CVT initialization), deceleration sensor zero point calibration and CVT oil pressure calibration when replacing the ECM or the oil pressure sensor (for CVT Models).

Click hereDrivetrain>K313 CVT>CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM>INITIALIZATION



PROCEDURE

1.CHECK CHARGING SYSTEM
a.

Check the charging system.

Click herePower Source / Network>2ZR-FE BATTERY / CHARGING>CHARGING SYSTEM>ON-VEHICLE INSPECTION


Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (ECM - GENERATOR ASSEMBLY)

NG

REPAIR OR REPLACE CHARGING SYSTEM

2.CHECK HARNESS AND CONNECTOR (ECM - GENERATOR ASSEMBLY)
a.

Disconnect the B64 ECM connector.


b.

Disconnect the B61 generator assembly connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
B64-61 (LIN) - B61-2 (LIN) Always Below 1 Ω
B64-61 (LIN) or B61-2 (LIN) - body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE GENERATOR ASSEMBLY

Click herePower Source / Network>2ZR-FE BATTERY / CHARGING>GENERATOR>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR