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) |
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms. If multiple
suspected areas are listed, the potential causes of the symptoms are listed in order
of probability in the "Suspected Area" column of ...
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL SHIFT LOCK CONTROL COMPUTER SUB-ASSEMBLY
(a) Engage the 3 claws to install the shift lock control computer sub-assembly.
(b) Connect the connector.
2. INSTALL LOWER ...
Removal
REMOVAL
PROCEDURE
1. REMOVE NO. 1 ENGINE UNDER COVER
2. REMOVE NO. 2 ENGINE UNDER COVER
3. DRAIN ENGINE COOLANT
4. REMOVE COOL AIR INTAKE DUCT SEAL
5. REMOVE INLET AIR CLEANER ASSEMBLY
6. REMOVE RADIATOR GRILLE
7. REMOVE LOW PITCHED HORN AS ...