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 |
Initialization
INITIALIZATION
1. Inspection After Repair
Perform learning value reset and idle learning after replacing or servicing parts
related to engine operation. Details on procedures required are indicated by an
asterisk and a number, and are explained in detail ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK THROTTLE BODY ASSEMBLY
(a) Check the throttle control motor operating sounds.
(1) Turn the ignition switch to ON.
(2) When pressing the accelerator pedal, check the operating sound of the running
motor. Make sure ...
Tachometer Malfunction
DESCRIPTION
In this circuit, the meter CPU receives engine speed signals from the ECM using
the CAN communication system (CAN No. 1 Bus). The meter CPU displays the engine
speed calculated based on the data received from the ECM.
WIRING DIAGRAM
PROCED ...