Toyota Camry (XV70): Linear Solenoid Power Supply System Malfunction (C120C)
DESCRIPTION
This DTC is output by the 4WD ECU assembly if a malfunction occurs in the linear solenoid power supply system.
|
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
|---|---|---|---|
|
C120C | Linear Solenoid Power Supply System Malfunction |
|
|
|
Vehicle Condition | ||||
|---|---|---|---|---|
|
Pattern 1 | Pattern 2 |
Pattern 3 | ||
|
Diagnosis Condition | When the 4WD relay is on and the voltage at the IG1 terminal is 9.5 V or more |
○ | - |
- |
| When the 4WD relay is on and the voltage at the IG1 terminal is less than 9.5 V |
- | ○ |
- | |
| While the 4WD relay is off |
- | - |
○ | |
|
Malfunction Status | The 4WD relay monitor remains off |
○ | ○ |
- |
| The 4WD relay monitor remains on immediately after the ignition switch is turned to ON |
- | - |
○ | |
|
Detection Time | 1 second or more |
1 second or more | 1 second or more | |
|
Number of Trips | 1 trip |
1 trip | 1 trip | |
HINT:
DTC will be output when conditions for any of the patterns in the table above are met.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
| 1. |
CHECK HARNESS AND CONNECTOR (IG1 TERMINAL) |
| (a) Disconnect the K145 4WD ECU assembly connector. |
|
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
K145-3 (IG1) -Body ground |
Ignition switch ON | 11 to 14 V |
| NG | .gif) | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
.gif)
| 2. |
CHECK HARNESS AND CONNECTOR (GND TERMINAL) |
(a) Turn the ignition switch off.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
K145-4 (GND) -Body ground |
Always | Below 1 Ω |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 3. |
RECONFIRM DTC |
(a) Clear the DTC.
Chassis > Four Wheel Drive > Clear DTCs(b) Turn the ignition switch to ON.
(c) Check that no DTCs other than DTC C120C have been output.
Chassis > Four Wheel Drive > Trouble Codes|
Result | Proceed to |
|---|---|
|
DTCs other than DTC C120C are not output |
A |
| DTCs other than DTC C120C are output |
B |
| A |
| REPLACE 4WD ECU ASSEMBLY
|
.gif)
| B |
| REPAIR CIRCUIT INDICATED BY OUTPUT CODE
|
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PROCEDURE
1. CHECK CONDITION
(a) Check with the customer if the vehicle has been turned by a turntable.
OK: Vehicle has not been turned by a turntable. HINT:
If the vehicle is turned on a turntable with the engine switch on (IG), the system may store the angular velocity. As
