LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 2009 >> TSX Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (Multiplex Integrated Control System) >> Relay Control Module Input Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Relay Control Module Input Test

WARNING: This page is about a different car, the 2008 Acura TSX, 2007 Acura TSX, 2006 Acura TSX, 2005 Acura TSX, and 2004 Acura TSX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the under-hood fuse/relay box under cover.
  2. Disconnect the 10P connector from the under-hood fuse/relay box.
    Fig 1: Identifying Under-Hood Fuse/Relay Box Connector K (10P) Terminals
    G05492801Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Inspect the connector and socket terminals to be sure they are all making good contact.
    • If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
    • If the terminals look OK, go to step 4.
  4. Reconnect the connector to the under-hood fuse/relay box, and make these input tests at the connector.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, go to step 5.
      INPUT TEST CONDITION REFERENCE CHART

      Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
      K10 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V.
      • Poor ground (G501, G601)
      • An open in the wire
      K8 YEL Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage.
      • Blown No. 21 (7.5 A) fuse in the under-dash fuse/relay box
      • An open in the wire
  5. Disconnect the 10P connector from the under-dash fuse/relay box, and make these input tests at the connector.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, the relay control module must be faulty, replace the under-hood fuse/relay box.
      INPUT TEST CONDITION REFERENCE CHART

      Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
      K7 BLU Under-dash fuse/relay box connector D (17P) disconnected Check for continuity between No. 7 terminal and the under-dash fuse/relay box connector D (17P) connector No. 11 terminal: There should be continuity. An open in the wire
      Check for continuity to ground: There should be no continuity. Short to ground
scientia non olet · About LEMON Manuals