BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS  ELECTRONICALLY CONTROLLED BRAKE SYSTEM(for Gasoline Model (NR Series))  C05121F  Right Rear Wheel Speed Sensor Circuit Intermittent  

Refer to DTC C051212

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DTC No.	Detection Item	DTC Detection Condition	Trouble Area
C05121F	Right Rear Wheel Speed Sensor Circuit Intermittent	· The speed sensor signal is excessively noisy. · The calculated change in wheel speed is more than 980 m/s2 for 5*1 or 20*2 seconds or more. · The calculated change in wheel speed fluctuates between more than 500 m/s2 and less than -500 m/s2 for 5*1 or 20*2 seconds or more. · When the vehicle speed is low, excessive noise in the speed sensor pulse signal is detected 3 times or more within 0.005 seconds for 5*1 or 20*2 seconds or more.	· Rear speed sensor RH (rear axle hub and bearing assembly RH) · Rear speed sensor rotor RH (rear axle hub and bearing assembly RH)

DTC Detection Conditions: C05121F

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3	Pattern 4
Diagnosis Condition	The Stop light switch assembly is OFF.	-	○	○	○
Malfunction Status	The speed sensor signal is excessively noisy.	○	-	-	-
	The calculated change in wheel speed is more than 980 m/s2.	-	○	-	-
	The calculated change in wheel speed fluctuates between more than 500 m/s2 and less than -500 m/s2.	-	-	○	-
	The vehicle speed is low, excessive noise in the speed sensor pulse signal is detected 3 times or more within 0.005 seconds.	-	-	-	○
Detection Time		-	5 seconds or more.	5 seconds or more.	5 seconds or more.
Number of Trips		1 trip	1 trip	1 trip	1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C05121F

		Vehicle Condition
		Pattern 5	Pattern 6	Pattern 7
Diagnosis Condition	The stop light switch assembly is ON.	○	○	○
Malfunction Status	The calculated change in wheel speed is more than 980 m/s2.	○	-	-
	The calculated change in wheel speed fluctuates between more than 500 m/s2 and less than -500 m/s2.	-	○	-
	The vehicle speed is low, excessive noise in the speed sensor pulse signal is detected 3 times or more within 0.005 seconds.	-	-	○
Detection Time		20 seconds or more.	20 seconds or more.	20 seconds or more.
Number of Trips		1 trip	1 trip	1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

NOTICE:

·

After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.

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·

After replacing or removing and installing a speed sensor rotor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.

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·

DTC precaution

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Procedure to clear warning lights (When not clearing DTCs)

Procedure
1. Repair or replacement. 2. Turn the ignition switch to ON. 3. Drive the vehicle at 54 km/h (34 mph) or more for 3 seconds or more to clear the warning lights.