DTC C1217 Pump Motor Relay Contact Circuit Open. Cadillac Eldorado 1999

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 1999 🢒 Eldorado 🢒 DTC 🢒 DTC C1217 Pump Motor Relay Contact Circuit Open

ABS Components
ABS Description
Cell 44: PWR, GND, ANTILOCK Indicator, and BPMV Solenoids
Handling ESD Sensitive Parts Notice
Cell 10: Battery Power to Fuse Blocks

Circuit Description

The pump motor is an integral part of the BPMV, while the pump motor relay is integral to the EBTCM. The pump motor relay is not engaged during normal system operation. Battery positive voltage (B+) is supplied to the EBTCM via CKT 1042 (RED) at connector C1 terminal E. When an ABS/TCS/Stabilitrak® control operation is required, the EBTCM activates the pump motor relay and battery power is provided to the pump motor.

Conditions for Setting the DTC

•	The ignition voltage is greater than 10.5 volts.

•	The solenoid relay is commanded ON.

•	The solenoid relay voltage is less than 8.0 volts.

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

•	It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.

•	An intermittent malfunction can 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 Diagnosis in Wiring Systems.

•	The relays are integral to the EBTCM and are not serviceable.

Test Description

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

This step checks for a short to ground in CKT 1042.

This step checks for an internal short in the BPMV.

This step checks for an open in CKT 1042.

Step	Action	Value(s)	Yes	No
1	Did you perform the ABS Diagnostic System Check?	--	Go to Step 2	Go to Diagnostic System Check - ABS
2	Inspect the RH underhood fuse block 50 A BRAKES Fuse. Is the fuse OK?	--	Go to Step 7	Go to Step 3
3	Install a new 50 A BRAKES Fuse. Turn OFF the ignition. Turn ON the ignition, with the engine OFF. Use a scan tool in order to select ABS/TCS/ICCS Special Functions. Run the AUTOMATED Test. Inspect the 50 A BRAKES Fuse. Is the fuse OK?	--	Go to Diagnostic System Check - ABS	Go to Step 4
4	Turn OFF the ignition. Remove the 50 A BRAKES Fuse. Disconnect the EBTCM connector. Disconnect the BPMV ground. Connect the J 39700 universal pinout box using the J 39700-25 cable adapter to the EBTCM harness connector only. Use a J 39200 DMM in order to measure the resistance between the J 39700 terminal E and terminal B. Is the resistance within the specified range?	OL (Infinite)	Go to Step 5	Go to Step 10
5	Remove the EBTCM from the BPMV. Connect the J 41247 pinout box to the BPMV. Measure the resistance between J 41247 terminal 8 and the BPMV case. Is the resistance within the specified range?	OL (Infinite)	Go to Step 9	Go to Step 6
6	Replace the BPMV. Refer to Brake Pressure Modulator Valve Replacement . Did you complete the repair?	--	Go to Diagnostic System Check - ABS	--
7	Install the fuse, if removed. Use a J 39200 DMM in order to measure the voltage at the 50 A BRAKES Fuse by probing between the fuse test terminals and a good ground. Is the voltage within the specified range?	Battery Voltage	Go to Step 8	Go to Wiring Repairs in Wiring Systems
8	Turn OFF the ignition. Disconnect the EBTCM. Connect J 39700 universal pinout box using the J 39700-25 cable adaptor to the EBTCM harness connector only. Using a J 39200 DMM, measure the voltage at terminal E of the J 39700 . Is the voltage within the specified range?	Battery Voltage	Go to Step 9	Go to Step 11
9	Replace EBTCM. Refer to Electronic Brake Control Module Replacement . Did you complete the repair?	--	Go to Diagnostic System Check - ABS	--
10	Repair the short to ground in CKT 1042. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair?	--	Go to Diagnostic System Check - ABS	--
11	Repair open in CKT 1042. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair?	--	Go to Diagnostic System Check - ABS	--