DESCRIPTION
Detection Item |
Symptom |
Trouble Area |
---|---|---|
Engine Stop and Start ECU Communication Stop Mode |
Communication stop for "Stop and Go/Start" is indicated on the "Communication Bus Check" screen of the GTS. Click here |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
NOTICE:
Click here
Click here
HINT:
When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.
Click here
Click here
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.
Click here
HINT:
PROCEDURE
1. |
CHECK FOR OPEN IN CAN BUS LINES (ENGINE STOP AND START ECU BRANCH LINE) |
(a) Disconnect the cable from the negative (-) auxiliary battery terminal.
(b) Disconnect the engine stop and start ECU connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (ENGINE STOP AND START ECU) |
|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
(a) Disconnect the engine stop and start ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
*a |
Front view of wire harness connector (to Engine Stop and Start ECU) |
- |
- |
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A168-8 (GND1) - Body ground |
Cable disconnected from negative (-) auxiliary battery terminal |
Below 1 Ω |
A168-2 (GND2) - Body ground |
Cable disconnected from negative (-) auxiliary battery terminal |
Below 1 Ω |
A169-6 (DGND) - Body ground |
Cable disconnected from negative (-) auxiliary battery terminal |
Below 1 Ω |
(c) Reconnect the cable to the negative (-) auxiliary battery terminal.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
A168-3 (BIN1) - Body ground |
Always |
9.5 to 14 V |
A168-1 (BIN2) - Body ground |
Always |
9.5 to 14 V |
A169-1 (+B) - Body ground |
Ignition switch ON |
9.5 to 14 V |
I230-21 (IGR) - Body ground |
Ignition switch ON |
9.5 to 14 V |
I230-18 (IGP) - Body ground |
Ignition switch ON |
9.5 to 14 V |
I230-19 (ACC) - Body ground |
Ignition switch ACC |
9.5 to 14 V |
OK |
REPLACE ENGINE STOP AND START ECU |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |