DTC C1217 Pump Motor Relay Contact Circuit Open. Buick Park Avenue 1998

For 1990-2009 cars only

Makes 🢒 Buick 🢒 1998 🢒 Park Avenue 🢒 DTC 🢒 DTC C1217 Pump Motor Relay Contact Circuit Open

ABS Components
Cell 44: Power, Ground, EBCM/EBTCM, BPMV Motor and Solenoids
Cell 10: Battery Power Circuits to Fuse Blocks (1 of 2)
Cell 14: G100, G101, G102 and G103
Handling ESD Sensitive Parts Notice
Cell 10: IGN SEN, ABS, RR DEFOG and AUXOT LT Fuses

Circuit Description

The EBCM/EBTCM and the BPMV receive power from three circuits. CKT 642 supplies battery power to the pump motor. CKT 342 supplies ignition power to the solenoid valves, the EBCM/EBTCM, and the pump motor relay coil. CKT 441 supplies battery power to initialize controller operations. CKT 441 also supplies power to the solenoid valve relay coil.

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 DTC C1217 is stored

•	The ABS/TCS is disabled

•	The ABS and the TRACTION OFF indicators are turned on

Conditions for Clearing the DTC

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

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

Diagnostic Aids

•	Thoroughly inspect the wiring and the connectors. Failure to carefully and fully inspect the wiring and the connectors can result in misdiagnosis. Misdiagnosis may cause replacement of parts without repairing the malfunction.

•	The following conditions are possible causes of the malfunction:

-	A problem in the power distribution system may result in no battery voltage to CKT 642

-	The ABS MOTOR fuse is open

-	CKT 642 has a wiring problem, corrosion, or faulty connections

-	There is an internal malfunction in the EBCM/EBTCM or the BPMV

-	The pump motor relay is faulty

-	The relays are integral to the EBCM/EBTCM and are not serviceable

•	If an intermittent malfunction exists, refer to Testing for Electrical Intermittents in Wiring Systems.

Test Description

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

This step tests for a short to ground in CKT 642.

This step tests for an internal short in the BPMV.

This step tests for an open in CKT 642.

DTC C1217 BPMV Pump Motor Relay Contact Circuit Open

Step	Action	Value(s)	Yes	No
1	Was the ABS Diagnostic System Check performed?	--	Go to Step 2	Go to Diagnostic System Check
2	Inspect the ABS MOTOR fuse in the Underhood MaxiFuse Block. Is the fuse OK?	--	Go to Step 7	Go to Step 3
3	Install a new ABS MOTOR fuse. Cycle the ignition from the OFF to the RUN position with the engine off. Using a scan tool, select ABS/TCS Special Functions. Run the AUTOMATED Test. Recheck the ABS MOTOR fuse. Is the fuse OK?	--	Go to Diagnostic System Check	Go to Step 4
4	Turn the ignition switch to the OFF position. Remove the ABS MOTOR fuse. Disconnect the EBCM/EBTCM. Disconnect the pump motor ground. Connect the J 39700 universal pinout box using the J 39700-25 cable adapter to the EBCM/EBTCM harness connector only. Using the J 39200 digital multimeter (DMM), measure the resistance between the J 39700 terminals E and B. Is the resistance within specifications?	OL (infinite)	Go to Step 5	Go to Step 10
5	Remove the EBCM/EBTCM from the BPMV. Connect the J 41247 pinout box to the BPMV. Measure the resistance between the J 41247 terminal 8 and the BPMV case. Is the resistance within specifications?	OL (infinite)	Go to Step 9	Go to Step 6
6	Replace the BPMV. Refer to Brake Pressure Modulator Valve Replacement . Is the replacement complete?	--	Go to Diagnostic System Check	--
7	Reinstall the fuse, if removed. Using the DMM, probe between the ABS MOTOR fuse test terminals and a good ground in order to measure the voltage. Is the voltage within the specified range?	Battery Voltage	Go to Step 8	Go to Wiring Repairs in Wiring Systems
8	Turn the ignition switch to the OFF position. Disconnect the EBCM/EBTCM. Connect the J 39700 universal pinout box using the J 39700-25 cable adapter to the EBCM/EBTCM harness connector only. Using the DMM, measure the voltage at the J 39700 terminal E to terminal B. Is the voltage within the specified range?	Battery Voltage	Go to Step 9	Go to Step 11
9	Replace the EBCM/EBTCM. Refer to Electronic Brake Control Module Replacement . Is the replacement complete?	--	Go to Diagnostic System Check	--
10	Repair the short to ground in CKT 642. Refer to Wiring Repairs in Wiring Systems. Is the circuit repair complete?	--	Go to Diagnostic System Check	--
11	Repair the open or high resistance in CKT 642. Refer to Wiring Repairs in Wiring Systems. Is the circuit repair complete?	--	Go to Diagnostic System Check	--