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HOMESERVICE MANUALSHONDA1991ACCORD DX, 2D COUPE, STANDARDREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEMCOMPONENT TESTINGMODULATOR SOLENOID LEAK TEST
1991 Honda Accord DX, 2D Coupe, Standard

Modulator Solenoid Leak Test

1991 Honda Accord DX, 2D Coupe, StandardSECTION Modulator Solenoid Leak Test
  1. Park vehicle on level surface. Block wheels, and place automatic transmission in Park or manual transmission in Neutral. Turn ignition off. Connect ABS Tester (07HAJ-SG0010A) to Pink 6-pin test connector, located on passenger-side of center console.
  2. Remove modulator reservoir filter, and fill reservoir to MAX level. DO NOT use aerated brake fluid bled from power unit. Use ABS "T" Wrench (07HAA-SG00101) to relieve accumulator line pressure. See Figure .
  3. Start engine, and release parking brake. Place ABS tester mode selector to "1" position. Push START TEST button. See Figure . With pump motor running, place finger over top of solenoid return tube, inside modulator reservoir. See Fig 1 .
    Fig 1: Locating Solenoid Return Tube in Modulator Reservoir
    G91J02796Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. If brake fluid is felt coming from return tube, a solenoid is leaking. Proceed to step 5). If brake fluid is not felt coming from return tube, solenoids are okay. Install modulator reservoir filter, and refill reservoir to MAX level.
  5. Relieve accumulator line pressure again. Place ABS tester mode selector to "3" and "6" positions. Repeat this procedure at least 3-4 times. Start engine, and release parking brake.
  6. Place ABS tester mode selector to "1" position. Push START TEST button. With pump motor running, place finger over top of solenoid return tube inside modulator reservoir.
  7. If solenoid leakage has stopped, install modulator reservoir filter, and refill reservoir to MAX level. If any solenoid is still leaking, replace modulator.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
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