RM38T0EC _57 Power Source / Network _104409 NETWORKING _0606038 CAN COMMUNICATION SYSTEM(for HEV Model) J

NETWORKING  CAN COMMUNICATION SYSTEM(for HEV Model)  ECM Communication Stop Mode  


DESCRIPTION

Detection Item Symptom Trouble Area
ECM Communication Stop Mode Communication stop for "ECM (Engine)" is indicated on the "Communication Bus Check" screen of the GTS.
Click here(Click here)
·

ECM main line or connector

·

Power source circuit of ECM

·

ECM ground circuit

·

ECM



WIRING DIAGRAM

C484966E04
0.156,1.865 0.771,2.063 0.615,0.198 10 false A192 0.156,2.021 2.229,2.292 2.073,0.271 10 false Inverter with Converter Assembly 1.688,0.813 1.896,1.031 0.208,0.219 10 false 13 1.698,1.385 1.969,1.625 0.271,0.24 10 false 14 5.49,0.823 5.698,1.042 0.208,0.219 10 false 7 5.5,1.385 5.771,1.635 0.271,0.25 10 false 8 5.74,0.823 6.271,1.073 0.531,0.25 10 false CFDH 5.75,1.375 6.281,1.625 0.531,0.25 10 false CFDL 1.76,2.896 3.146,3.26 1.385,0.365 10 false from IGP-MAIN Relay 1.385,3.438 3.927,3.698 2.542,0.26 10 false from EFI-MAIN NO. 1 Relay 1.396,4.51 3.938,4.771 2.542,0.26 10 false from EFI-MAIN NO. 1 Relay 5.5,2.844 5.771,3.094 0.271,0.25 10 false 2 3.938,3.073 5.323,3.438 1.385,0.365 10 false ECU-IGP NO. 1 5.49,3.354 5.76,3.604 0.271,0.25 10 false 9 5.458,3.906 5.729,4.156 0.271,0.25 10 false 35 5.438,4.427 5.708,4.677 0.271,0.25 10 false 15 5.438,4.958 5.708,5.208 0.271,0.25 10 false 10 5.75,2.906 6.281,3.156 0.531,0.25 10 false IGP 5.75,3.448 6.281,3.698 0.531,0.25 10 false +B 5.75,3.99 6.281,4.24 0.531,0.25 10 false +B2 5.74,4.51 6.271,4.76 0.531,0.25 10 false MREL 5.76,5.083 6.292,5.333 0.531,0.25 10 false E1 5.99,6.031 6.521,6.281 0.531,0.25 10 false A47 5.979,6.188 6.51,6.438 0.531,0.25 10 false ECM 1.198,0.948 1.729,1.198 0.531,0.25 10 false CADH 1.208,1.458 1.74,1.708 0.531,0.25 10 false CADL

CAUTION / NOTICE / HINT

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.


NOTICE:
·

Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for HEV Model)>HOW TO PROCEED WITH TROUBLESHOOTING

·

Before measuring the resistance of the CAN bus, turn the ignition switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) auxiliary battery terminal and leave the vehicle for 10 minute or more before measuring the resistance.

·

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

·

When disconnecting and reconnecting the auxiliary battery.

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART


·

Some parts must be initialized and set when replacing or removing and installing parts.

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>WORK PROCEDURE

·

After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.

DTC check procedure: Turn the ignition switch to ON and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.

·

After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM (for HEV Model)>DIAGNOSIS SYSTEM

·

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



HINT:
·

Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.

·

When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.



PROCEDURE

1.CHECK FOR OPEN IN CAN BUS LINES (ECM MAIN LINE)
a.

Disconnect the cable from the negative (-) auxiliary battery terminal.


b.

Disconnect the ECM connector.


c.
C392553C35
0.198,0.938 0.615,1.188 0.417,0.25 1.844,0.771 0.615,1.813 true 1.927,0.76 3.052,1.792 true 0.188,0.177 0.406,0.427 0.219,0.25 10 false *a 0.302,0.99 0.729,1.198 0.427,0.208 10 false A47 0.427,1.844 0.896,2.063 0.469,0.219 10 false CFDH 2.885,1.844 3.354,2.063 0.469,0.219 10 false CFDL
*a Front view of wire harness connector
(to ECM)


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

Standard Resistance:
Tester Connection Condition Specified Condition
A47-7 (CFDH) - A47-8 (CFDL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω



Result:
Proceed to
OK
NG



OK

2.CHECK ECM POWER SOURCE CIRCUIT

NG

REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (ECM)

2.CHECK ECM POWER SOURCE CIRCUIT
a.

Check the ECM power source circuit.

Click hereEngine / Hybrid System>M20F-FXS, M20G-FXS (ENGINE CONTROL)>SFI SYSTEM>ECM Power Source Circuit


Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>M20F-FXS, M20G-FXS (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)