LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 1987 >> Prelude Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Throttle Control System >> Component Testing >> Cranking Solenoid Valve
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Cranking Solenoid Valve

NOTE: Perform this test on hot engine. Test is for Accord and Prelude models only.
  1. Ground coil secondary wire to prevent engine from starting. Turn ignition to "START" position. Throttle controller arm should retract when engine is cranked. If controller operates, cranking solenoid valve system is okay.
  2. If controller does not operate, check for voltage at cranking solenoid valve. Using voltmeter positive test lead, probe control unit connector Blue/Red wire (Accord models) or Black/White wire (Prelude models). Ground voltmeter negative test lead. If no voltage is present, check wiring and fuse.
  3. If voltage is present, disconnect hose between cranking solenoid valve and check valve at solenoid valve. Check for vacuum while cranking engine.
  4. Vacuum should be present with ignition switch turned to "START" position. If vacuum is present, replace cranking solenoid valve and retest. If there is no vacuum, check vacuum line for leaks or blockage. If vacuum lines are okay, replace check valve and retest.
scientia non olet · About LEMON Manuals