DESCRIPTION
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
U0100 |
No communication from the ECM continues. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
HINT:
PROCEDURE
1. |
RECONFIRM DTC OUTPUT |
(a) Reconfirm DTCs.
HINT:
If CAN power management bus DTC U1002 is output from the power management control ECU (Techstream display: PM2 Gateway), troubleshoot for U1002 and check for malfunctions in the power management main bus circuit.
Result |
Proceed to |
---|---|
U1002 is not output from power management control ECU (Techstream display: PM2 Gateway) |
A |
U1002 is output from power management control ECU (Techstream display: PM2 Gateway) |
B |
B | ![]() |
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
2. |
CHECK FOR OPEN IN CAN BUS WIRES (ECM MAIN WIRE/POWER MANAGEMENT BUS) |
(a) Turn the ignition switch off.
(b) Disconnect the ECM connector. Text in Illustration
|
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A49-12 (CANP) - A49-4 (CANN)*1 |
Ignition switch off |
108 to 132 Ω |
A41-8 (CANP) - A41-9 (CANN)*2 |
Ignition switch off |
108 to 132 Ω |
*1: for 1AR-FE
*2: for 2GR-FE
NG | ![]() |
REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (ECM MAIN WIRE) |
|
3. |
CHECK ECM POWER SOURCE CIRCUIT |
(a) Check the ECM power source circuit.
HINT:
Result |
Proceed to |
---|---|
OK (for 2GR-FE) |
A |
OK (for 2AR-FE) |
B |
NG |
C |
HINT:
If there is no abnormality in the ECM power source circuit, replace the ECM.
A | ![]() |
REPLACE ECM |
B | ![]() |
REPLACE ECM |
C | ![]() |
REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT |
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK FOR FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK
(a) Check fuel pump operation.
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON and turn the Techstream on.
NOTICE:
Do not start the eng ...
Precaution
PRECAUTION
HINT:
In the airbag system, the front airbag sensor, door side airbag sensor
and rear airbag sensor are collectively referred to as the airbag sensors.
The steering pad, driver side knee airbag assembly, front passenger
airb ...
Removal
REMOVAL
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-)
battery terminal to disable the SRS system.
NOTICE:
When disconnecting the cable, some systems ne ...