Code No.C1862: G and yaw rate sensor power voltage malfunction (high voltage)

caution

If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C, CAN Bus Diagnosis Table ).
Whenever ECU is replaced, ensure that the CAN bus lines are normal.

OPERATION

The G and yaw rate sensor output signal is sent to TCL/ASC-ECU via the CAN bus lines.

DIAGNOSIS CODE SET CONDITIONS

The G and yaw rate sensor monitors the power supply voltage supplied from the IG1, and if the sensor determines that the voltage value is abnormally high, it sets this code.

PROBABLE CAUSES

Charging circuit failure
Malfunction of the G and yaw rate sensor

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics

Use the M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

	Go to Step 3.

	Repair the CAN bus lines. (Refer to GROUP 54C - Troubleshooting .) On completion, go to Step 2.

STEP 2. Diagnosis code recheck after resetting CAN bus lines

Q. Is the diagnosis code No.C1862 set?

	Go to Step 3.

	This diagnosis is complete.

STEP 3. Battery terminal voltage measurement

(1)Start the engine.

(2)Set the engine speed to approximately 2,500 rpm.

(3)Measure the voltage between the positive and negative battery terminals.
OK: 16 V or less

Q. Is the check result normal?

	Go to Step 4.

	Diagnose the charging system. (Refer to GROUP 16 - On-vehicle Service .)

STEP 4. Diagnosis code recheck

(1)Start the engine.

(2)Set the engine speed to approximately 2,500 rpm.

Q. Is the diagnosis code No.C1862 set?

	Replace the G and yaw rate sensor (Refer to ). Then go to Step 5.

	Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

STEP 5. Diagnosis code recheck

(1)Start the engine.

(2)Set the engine speed to approximately 2,500 rpm.

Q. Is the diagnosis code No.C1862 set?

	Return to Step 1.

	This diagnosis is complete.