Dtc P161A Lin Communication Error With Alternator


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CHARGING SYSTEM

CHECK HARNESS AND CONNECTOR (ECM - GENERATOR ASSEMBLY)

INSPECT GENERATOR ASSEMBLY

DTC P161A LIN Communication Error with Alternator


DESCRIPTION

The ECM and generator assembly each detect reception malfunctions. A generator assembly reception malfunction detected by the generator assembly is sent to the ECM via LIN communication. If there is a malfunction in either the ECM or generator assembly, the ECM determines that there is a LIN communication malfunction and outputs a DTC.

DTC Code
DTC Detection Condition
Trouble Area
P161A
Diagnosis condition:
Engine switch on (IG)
When the ECM cannot receive LIN communication, the generator assembly cannot receive LIN communication for approximately 17 minutes or more
Other: 1 trip
  1. Harness or connector
  2. Generator assembly
  3. ECM

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Battery Charging.Charging System. Dtc P161A Lin Communication Error With Alternator


INSPECTION PROCEDURE

1.CHECK CHARGING SYSTEM

  1. Check the charging system (LandCruiser RM000001AR90CCX.html).



NG
REPAIR OR REPLACE CHARGING SYSTEM
OK


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

  1. Disconnect the C152 ECM connector.

  1. Disconnect the C157 generator assembly connector.

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

    Standard Resistance (Check for Open):

    Tester Connection
    		Condition
    		Specified Condition
    C152-7 (LIN) - C157-2 (LIN)
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):

    Tester Connection
    		Condition
    		Specified Condition
    C152-7 (LIN) or C157-2 (LIN) - Body ground
    		Engine switch off (while LIN communication is stopped)
    		10 kΩ or higher

  1. Reconnect the C157 generator assembly connector.

  1. Reconnect the C152 ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT GENERATOR ASSEMBLY

  1. Inspect the generator assembly.

    1. for 100 A Type: (LandCruiser RM000001ONN09FX.html)
    2. for 130 A Type: (LandCruiser RM000001ONN09BX.html)
    Result
    Result
    		Proceed to
    OK
    		A
    NG (for 100 A Type)
    		B
    NG (for 130 A Type)
    		C


B
REPLACE GENERATOR ASSEMBLY (LandCruiser RM000001ONP05AX.html)

C
REPLACE GENERATOR ASSEMBLY (LandCruiser RM000001ONP058X.html)
A

REPLACE ECM (LandCruiser RM0000013Z002DX.html)