Dtc C15A5/65 Actuator Malfunction
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR)
CHECK STEERING ACTUATOR (STEERING CONTROL ECU - STEERING ACTUATOR)
DTC C15A5/65 Actuator Malfunction
DESCRIPTION
If the steering control ECU detects a malfunction in the lock mechanism, it will turn the master warning light on, store DTC C15A5/65, and stop VGRS operation.
DTC Code | DTC Detection Condition | Trouble Area |
C15A5/65 |
The steering control ECU detects that the LG terminal voltage is abnormal. |
Harness or connector
Steering actuator
Steering control ECU
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WIRING DIAGRAM

INSPECTION PROCEDURE
1.CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR) |

Disconnect the E79 steering control ECU connector.
Disconnect the E80 steering actuator connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection | Condition | Specified Condition |
E79-3 (LV) - E80-7 (LV+) | Always | Below 1 Ω |
E79-12 (LG) - E80-16 (LG+) |
E79-3 (LV) - Body ground | Always | 10 kΩ or higher |
E79-12 (LG) - Body ground |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection | Switch Condition | Specified Condition |
E79-3 (LV) - Body ground | Engine switch on (IG) | Below 1 V |
E79-12 (LG) - Body ground |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
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2.CHECK STEERING ACTUATOR (STEERING CONTROL ECU - STEERING ACTUATOR) |
Disconnect the E79 steering control ECU connector.
Reconnect the E80 steering actuator connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection | Condition | Specified Condition |
E79-3 (LV) - E79-12 (LG) | Always | 10 to 100 Ω |
E79-3 (LV) - Body ground | Always | 10 kΩ or higher |
E79-12 (LG) - Body ground |
ResultResult Result | Proceed to |
NG | A |
OK (for LHD) | B |
OK (for RHD) | C |
| REPLACE STEERING CONTROL ECU ()
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| REPLACE STEERING CONTROL ECU ()
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A | |
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REPLACE STEERING ACTUATOR ASSEMBLY ()
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