RM3660EC _57 Power Source / Network _080760 NR Series BATTERY / CHARGING _0394911 CHARGING SYSTEM C

NR Series BATTERY / CHARGING  CHARGING SYSTEM  P161A87  Lost Communication with Alternator Missing Message  


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 Note
P161A87 Lost Communication with Alternator Missing Message Generator assembly or ECM communication stops for approximately 17 minutes or more with the ignition switch ON.
(1 trip detection logic)
·

Wire harness or connector

·

Generator assembly

·

ECM


Charge warning is not displayed DTC stored SAE Code: P161A

WIRING DIAGRAM

A426244E15
5.865,3.031 6.313,3.219 0.448,0.188 10 false ECM 5.865,2.844 6.323,3.042 0.458,0.198 10 false C78 5.5,0.677 5.958,0.875 0.458,0.198 10 false LIN 5.219,0.5 5.677,0.698 0.458,0.198 10 false 61 3.396,0.667 3.854,0.865 0.458,0.198 10 false LIN 3.708,0.51 4.167,0.708 0.458,0.198 10 false 2 2.333,0.656 2.792,0.854 0.458,0.198 10 false +B 2.156,0.51 2.615,0.708 0.458,0.198 10 false 1 1.292,0.792 2.198,1.104 0.906,0.313 10 false BATT-S 0.896,2.344 1.802,2.656 0.906,0.313 10 false Battery 2.219,1.302 4.573,1.563 2.354,0.26 10 false Battery State Sensor Assembly 2.208,1.135 2.667,1.333 0.458,0.198 10 false C86 2.271,2.802 4.563,3.104 2.292,0.302 10 false Generator Assembly 2.281,2.625 2.74,2.823 0.458,0.198 10 false C81 3.406,2.146 3.865,2.344 0.458,0.198 10 false LIN 3.719,1.979 4.177,2.177 0.458,0.198 10 false 2 0.771,3.281 2.479,3.552 1.708,0.271 10 false : LIN Communication Line 0.729,1.365 1.635,1.677 0.906,0.313 10 false BATT-MAIN

PROCEDURE

1.CHECK CHARGING SYSTEM
a.

Check the charging system.

Click herePower Source / Network>NR Series (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 C78 ECM connector.


b.

Disconnect the C81 generator assembly connector.


c.

Disconnect the C86 battery state sensor assembly connector.


d.

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

Standard Resistance:
Tester Connection Condition Specified Condition
C78-61 (LIN) - C81-2 (LIN) or C86-2 (LIN) Always Below 1 Ω
C78-61 (LIN), C81-2 (LIN) or C86-2 (LIN) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

3.CLEAR DTCS

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CLEAR DTCS
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Trouble Codes.


e.

Check for DTCs, and then write them down.

Powertrain > Engine > Trouble Codes
50001 372

f.

Enter the following menus: Powertrain / Engine / Trouble Codes.


g.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

h.

Turn the ignition switch off and wait for at least 30 seconds.


Result:
Proceed to
NEXT



NEXT

4.CHECK FOR DTCS
4.CHECK FOR DTCS
a.

Connect the GTS to the DLC3.


b.

Start the engine.


c.

Allow the engine to idle for approximately 17 minutes or more.


d.

Turn the GTS on.


e.

Enter the following menus: Powertrain / Engine / Trouble Codes.


f.

Check for DTCs.

Powertrain > Engine > Trouble Codes
50001 372
Result:
Result Proceed to
Only DTC P161A87 is output A
DTC P161A87 and P162B87 are output B
DTCs are not output C




A

REPLACE GENERATOR ASSEMBLY

Click herePower Source / Network>NR Series (BATTERY / CHARGING)>GENERATOR>REMOVAL


B

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL


C

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS