Heater Control Valve: Service and Repair

Heater Water Control Solenoid

Remova

1. Remove first seat behind driver, if so equipped.

2. Remove the auxiliary service cover.

3. Drain the cooling system following the recommended procedures. Observe all safety precautions.

4. Disconnect wiring connector.

5. Disconnect solenoid from heater water hoses using flat-blade screwdriver.

6. Using a backup wrench to prevent damage, disconnect the solenoid valve from the heater core.

7. Remove the solenoid.

Installation

1. Install new 0-rings to the heater core and the heater water hoses.

2. Install the solenoid to both lines, tightening the connections only finger-tight at this time.

3. Attach solenoid to A/C evaporator case mounting bracket and tighten screws.

4. Using a backup wrench, tighten the heater water hoses to the solenoid 14-20 N.m (10-15 lb-ft) and the solenoid to heater core 21-27 N.m (15-20 lb-ft).

5. Connect solenoid electrical connector to harness and attach to A/C evaporator case mounting bracket.

6. Refill coolant system.

7. Install service panel and passenger seat as outlined.