Ignition control module (icm) (page 2 of 4)

Check the vacuum hoses and vacuum pipes for bad connections, cracks, blockage or disconnected hoses.

Inspection of engine mount control solenoid valve

Warm up engine to normal operating temperature (radiator fan comes on at least twice).

A Vacuum hose (to diaphragm actuator)
B Vacuum pump gauge
C Vacuum hose (from intake manifold)
D Engine mount control solenoid valve

A Vacuum hose
B Vacuum pump gauge
C A (+)
D B (-)

Disconnect the vacuum hose from the engine mount control solenoid valve, and connect a vacuum pump gauge and hose to the engine mount cont rol solenoid valve.

Is there intake manifold vacuum when the engine is below 800 rpm

• NO: Turn the ignition switch OFF.
  1. Disconnect the 2 – P connector from the engine mount control solenoid valve, connect battery power to A terminal and earth to B terminal of the engine mount control solenoid valve.
  2. Start the engine

  Is there intake manifold vacuum?

  • NO: Replace the engine mount control solenoid valve
  • YES: Engine mount control solenoid valve is OK. Perform input test for the engine mount control unit, see control unit input test.
• YES: To page 241