C1904

SUSPENSION CONTROL: ACTIVE STABILIZER SUSPENSION SYSTEM: C1901-C1904,C1906,C191C,C1951: Rear Magnetic Pole Sensor Initialization Incomplete

DESCRIPTION

The rear active stabilizer control actuator consists of the rotation angle sensor, relay, motor and other parts. If a problem related to the rotation angle sensor or actuator drive function of the rear active stabilizer control actuator or rear active stabilizer control ECU occurs, the DTCs below are output. DTC C1951 is output during Test Mode.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK CONNECTOR CONNECTION CONDITION

(a) Turn the power switch off.

(b) Inspect the condition of the connector terminal.

OK:

Connector and terminal are not deformed or damaged. Terminal is not loose or corroded.

OK -- CHECK HARNESS AND CONNECTOR (REAR ACTIVE STABILIZER CONTROL ECU - REAR ACTIVE STABILIZER CONTROL ACTUATOR)
NG -- Continue to next step.

2. CHECK FOR DTC

(a) Repair the connector or terminal.

(b) Check for DTC Active Stabilizer Suspension System.

Result

B -- END
A -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (REAR ACTIVE STABILIZER CONTROL ECU - REAR ACTIVE STABILIZER CONTROL ACTUATOR)

(a) Turn the power switch off.

(b) Disconnect the z20 and z21 rear active stabilizer control ECU connector.

(c) Disconnect the C rear active stabilizer control actuator (rotation angle sensor) connector.

(d) Measure the resistance according to the value(s) in the table below.

Standard resistance:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. CHECK OPERATION OF REAR ACTIVE STABILIZER CONTROL ECU

(a) Exchange the rear active stabilizer control ECU with the front active stabilizer control ECU.

(b) Connect Techstream to the DLC3.

(c) Turn the power switch on (IG) and press the Techstream main switch ON.

(d) Clear the DTC Active Stabilizer Suspension System.

(e) Check for DTC.

Result

A -- REPLACE REAR ACTIVE STABILIZER CONTROL ECU Removal

B -- REPLACE REAR ACTIVE STABILIZER CONTROL ACTUATOR Removal