- Harness or connector
- Steering actuator
- Steering control ECU
| Last Modified: 11-27-2007 | 1.6 C | |
| Service Category: Steering | Section: Steering Column | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000YU400IX |
| Title: VARIABLE GEAR RATIO STEERING: VARIABLE GEAR RATIO STEERING SYSTEM: DESCRIPTION (2008 LX570) | ||
|
DTC |
C15A1/61 |
Actuator Malfunction |
DESCRIPTION
The steering control ECU drives the actuator while the steering wheel is turned to set the gear ratio. It detects the current flowing into the actuator motor driving circuit.
If the steering control ECU detects excessive current, it will store DTC C15A1/61, turn on the master warning light, and stop VGRS operation.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C15A1/61 |
Excessive current (exceeding the estimated amount) flows due to a malfunction in the motor drive circuit. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
When DTC C15A2/62 is output, a short circuit inside the steering actuator or inside the steering control ECU is suspected.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (STEERING CONTROL ECU - STEERING ACTUATOR) |
(a) Disconnect the E83 steering control ECU connector.
(b) Disconnect the E85 steering actuator connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E83-1 (BMV) - E83-2 (BMU) |
Always |
10 kΩ or higher |
|
E83-1 (BMV) - E83-3 (BMW) |
||
|
E83-2 (BMU) - E83-3 (BMW) |
||
|
E83-1 (BMV) - E85-5 (BMV+) |
Always |
Below 1 Ω |
|
E83-2 (BMU) - E85-4 (BMU+) |
||
|
E83-3 (BMW) - E85-13 (BMW+) |
||
|
E83-1 (BMV) - Body ground |
Always |
10 kΩ or higher |
|
E83-2 (BMU) - Body ground |
||
|
E83-3 (BMW) - Body ground |
|
|
2. |
CHECK STEERING ACTUATOR |
|
(a) Disconnect the E83 steering control ECU connector. |
(b) Measure the resistance according to the value(s) in the table below.
HINT:
The resistance must be measured with the steering actuator connector connected.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E83-1 (BMV) - E83-2 (BMU) |
Always |
Below 1 Ω |
|
E83-1 (BMV) - E83-3 (BMW) |
||
|
E83-2 (BMU) - E83-3 (BMW) |
||
|
E83-1 (BMV) - Body ground |
Always |
10 kΩ or higher |
|
E83-2 (BMU) - Body ground |
||
|
E83-3 (BMW) - Body ground |
|
|
|