C1216

DTC C1216 Solenoid Valve Relay Coil Circuit Open:

Solenoid Valve Relay Schematic:

CIRCUIT DESCRIPTION
The EBCM/EBTCM and BPMV receives power from three circuits. CKT 642 supplies battery power to the pump motor. CKT 342 supplies battery power to the solenoid valves, the EBCM/EBTCM, and the coil of the pump motor relay. CKT 641 supplies battery power to initialize controller operations. It also supplies power to the solenoid valve relay coil.

CONDITION FOR SETTING THE DTC
- DTC C1216 will set anytime the solenoid relay is commanded "ON" and the solenoid relay voltage is less than 8 volts, and ignition voltage is greater than 10.5 volts. The solenoid relay is then commanded "OFF" to isolate between the relay contact circuit and the relay coil circuit.

ACTION TAKEN WHEN THE DTC SETS
- A malfunction DTC is stored, ABS/TCS is disabled and the "ABS" and "TRACTION OFF" Indicator lamps are turned "ON."

CONDITIONS FOR CLEARING DTC
- Condition for DTC is no longer present and scan tool clear DTC function is used.
- 50 ignition cycles have passed with no DTC(s) 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 no power is available at CKT 641 then a no communication with EBCM/EBTCM will result.
- There is an internal malfunction in the EBCM/EBTCM or the BPMV.
- The Relays are integral to the EBCM/EBTCM and are not serviceable.

TEST DESCRIPTION
The number below refer to a step number on the diagnostic table.
2. Replaces EBCM/EBTCM.