Circuit Description
The solenoid valve relay supplies power to the solenoid valves in the BPMV. The solenoid valve relay, located in the EBTCM, is activated whenever the ignition switch is in the ON position and no faults are present. Power is provided to the solenoid valves through the relay from CKT 1242 going into terminal D of the EBTCM. The solenoid valve relay remains engaged until the ignition is turned off or a failure is detected.
Conditions for Setting the DTC
DTC C1214 will set anytime the solenoid valve relay is commanded on and the solenoid valve relay voltage is less than 8 volts, and ignition voltage is greater than 10.5 volts.
Action Taken When the DTC Sets
ABS/TCS/Active Handling (if equipped with RPO JL4) are disabled.
| • | Indicators that turn on: |
| - | ABS indicator |
| - | Car Icon (TCS indicator) |
| • | Messages displayed on the DIC: |
| - | Service ABS |
| - | Service Traction System |
| - | Service Active HNDLG (if equipped with Active Handling RPO JL4) |
Conditions for Clearing the DTC
| • | Condition for DTC is no longer present and scan tool clear DTC function is used. |
| • | Fifty ignition cycles have passed with no DTCs detected. |
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. |
| • | If an intermittent malfunction exists refer to Testing for Electrical Intermittents 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.
-
Checks for a short to ground in CKT 1242.
-
Checks for an internal short in the BPMV.
-
Checks for an open in CKT 1242.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Diagnostic System Check performed? | -- | ||
2 | Inspect fuse 20A ABS ELEC Maxifuse®, in the Underhood Electrical Center. Is the fuse OK? | -- | ||
3 |
Is the fuse OK? | -- | ||
Is the resistance within the range specified in the value(s) column? | OL (infinite) | |||
Is the resistance within the range specified in the value(s) column? | OL (infinite) | |||
6 | Replace the BPMV. Refer to Brake Pressure Modulator Valve Replacement . Is the replacement complete? | -- | -- | |
7 |
Is the voltage within the range specified in the value(s) column? | Battery volts | Go to Power Distribution in Wiring Systems | |
Is the voltage within the range specified in the value(s) column? | Battery volts | |||
9 | Replace the EBTCM. Refer to Electronic Brake Control Module Replacement . Is the replacement complete? | -- | -- | |
10 | Repair short to ground in CKT 1242. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
11 | Repair open in CKT 1242. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- |
