DESCRIPTION
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
U0230 |
No communication from the power back door ECU (back door motor unit) or back door closer ECU continues. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
HINT:
PROCEDURE
1. |
RECONFIRM DTC OUTPUT |
(a) Reconfirm DTCs.
HINT:
If CAN MS bus DTC U1002 is output from the main body ECU (Techstream display: Main Body), troubleshoot for U1002 and check for malfunctions in the CAN MS bus circuit.
Result |
Proceed to |
---|---|
U1002 is not output from main body ECU (Techstream display: Main Body) |
A |
U1002 is output from main body ECU (Techstream display: Main Body) |
B |
B |
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
2. |
CHECK VEHICLE TYPE |
(a) Check vehicle type.
Result
Result |
Proceed to |
---|---|
w/ Power back door system |
A |
w/ Back door closer system |
B |
B |
GO TO STEP 6 |
|
3. |
CHECK FOR OPEN IN CAN BUS WIRES (POWER BACK DOOR ECU (BACK DOOR MOTOR UNIT) BRANCH WIRE) |
(a) Turn the ignition switch off.
(b) Disconnect the power back door ECU (back door motor unit) connector. Text in Illustration
|
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
L20-6 (MPX1) - L20-5 (MPX2) |
Ignition switch off |
54 to 69 Ω |
NG |
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (POWER BACK DOOR ECU (BACK DOOR MOTOR UNIT) BRANCH WIRE) |
|
4. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
|
5. |
CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPLACE POWER BACK DOOR ECU (POWER BACK DOOR UNIT ASSEMBLY) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) |
6. |
CHECK FOR OPEN IN CAN BUS WIRES (BACK DOOR CLOSER ECU BRANCH WIRE) |
(a) Turn the ignition switch off.
(b) Disconnect the back door closer ECU connector. Text in Illustration
|
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
L21-12 (MPX2) - L21-11 (MPX1) |
Ignition switch off |
54 to 69 Ω |
NG |
REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (BACK DOOR CLOSER ECU BRANCH WIRE) |
|
7. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
|
8. |
CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPLACE BACK DOOR CLOSER ECU |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) |
Lost Communication with ECM / PCM "A" (U0100,U0129)
DESCRIPTION
The power steering ECU receives signals from the ECM and the brake actuator assembly
(skid control ECU) via the CAN communication system.
DTC No.
DTC Detection Condition
Trouble Area
U0100
...
Emission Control System
Parts Location
PARTS LOCATION
ILLUSTRATION
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT FUEL CUT-OFF RPM
(a) Increase the engine speed to at least 3500 rpm.
(b) Use a sound scope to check for injector operating soun ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL HEATED OXYGEN SENSOR
2. INSTALL FRONT EXHAUST PIPE ASSEMBLY
(a) Using a vernier caliper, measure the free length of the compression
springs.
Minimum Free Length:
41.5 mm (1.63 in.)
If the free l ...