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 |
General Information
GENERAL INFORMATION
A large number of ECU controlled systems are used in this vehicle. In
general, ECU controlled systems are considered to be very intricate, requiring
a high level of technical knowledge to troubleshoot. However, most problem ...
Inner Rear View Mirror Power Source Circuit
DESCRIPTION
This circuit detects the state of the ignition switch, and sends it to the inner
rear view mirror assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the followin ...
Automatic anti-glare function
Responding to the level of brightness of the headlights of vehicles behind, the
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Changing automatic anti-glare function mode ON/OFF
When the automatic anti-glare function is in ON mode, the indicator illuminates.
...