DTC C1223 LR Wheel Speed Sensor Input Signal is 0. Cadillac DeVille 1998

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 1998 🢒 DeVille 🢒 DTC 🢒 DTC C1223 LR Wheel Speed Sensor Input Signal is 0

ABS Components
Cell 44: Wheel Speed Sensors and Variable Steering Actuator
Handling ESD Sensitive Parts Notice

Circuit Description

The wheel speed sensor used on this vehicle is a single point magnetic pickup. This sensor produces an AC signal that the EBTCM uses the frequency from to calculate the wheel speed.

Conditions for Setting the DTC

All of the following conditions exists for 2.5 seconds:

•	The suspect wheel speed equals zero.

•	The other wheel speeds are greater than 8 km/h (5 mph).

•	The other wheel speeds are within 11 km/h (7 mph) of each other.

Action Taken When the DTC Sets

•	A malfunction DTC is stored.

•	The ABS/TCS/Stabilitrak® is disabled.

•	The ABS indicator is turned ON.

•	The TRACTION CONTROL indicator is turned ON.

•	The DIC displays the SERVICE STABILITY SYS message.

Conditions for Clearing the DTC

•	The condition for DTC is no longer present and you used scan tool Clear DTCs function.

•	The condition for DTC is no longer present and you used the On-Board Clear DTCs function.

•	The EBTCM does not detect the DTC in 50 drive cycles.

Diagnostic Aids

•	Perform a thorough inspection of the wiring and the connectors. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.

•	An intermittent malfunction may be caused by poor connections, broken insulation, or a wire that is broken inside the insulation.

•	If an intermittent malfunction exists, refer to Intermittents and Poor Connections .

Test Description

The numbers below refer to step numbers on the diagnostic table.

Checks the resistance of the WSS.

Checks if the WSS CKTs are shorted together.

DTC C1223 LR Wheel Speed Sensor Input is 0

Step	Action	Value(s)	Yes	No
1	Was the Diagnostic System Check performed?	--	Go to Step 2	Go to Diagnostic System Check
2	Inspect the wheel hub speed sensor WSS wiring and connectors for damage. Inspect WSS for looseness or damage. Is physical damage of the sensor evident?	--	Go to Step 7	Go to Step 3
3	Disconnect the WSS at the sensor pigtail. Use a J 39200 digital multimeter (DMM) in order to measure the resistance between terminal A and terminal B of the WSS. Is the resistance within the specified range?	850-1350 ohms	Go to Step 4	Go to Step 7
4	With the DMM still connected, select the mV AC scale. Spin the wheel as fast as you can by hand while monitoring the AC output. Is the AC voltage greater than the specified value?	100 mV	Go to Step 5	Go to Step 7
5	Disconnect the electronic brake traction control module (EBTCM) harness connector. Use a J 39700-25 cable adapter in order to install a J 39700 universal pinout box to the EBTCM harness connector only. Use the DMM in order to measure the resistance between terminal 12 and terminal 28 of the J 39700 . Is the resistance equal to the specified value?	OL (infinite)	Go to Step 6	Go to Step 8
6	Reconnect all connectors. Carefully test drive the vehicle above 24 Km/h (15 mph) for at least 30 seconds while monitoring a scan tool. Does the DTC reset as a current DTC?	--	Go to Step 9	Go to Diagnostic System Check
7	Replace the wheel speed sensor. Refer to Rear Wheel Bearing and Hub Replacement in Rear Suspension. Did you complete the repair?	--	Go to Step 10	--
8	Repair the short between CKT 884 and CKT 885. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair?	--	Go to Step 10	--
9	Replace the EBTCM. Refer to Electronic Brake Control Module Replacement . Did you complete the repair?	--	Go to Step 10	--
10	Carefully test drive vehicle above 24 Km/h (15 mph) while monitoring a scan tool for at least 30 seconds. Does the DTC set as a current DTC?	--	Go to Step 2	Go to Diagnostic System Check