Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Keyless Receiver Unit Input Test
2002 Honda Civic SiSECTION Keyless Receiver Unit Input Test
WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the glove box (see GLOVE BOX REMOVAL/INSTALLATION ).
- Disconnect the 7P connector (A) from the keyless receiver unit (B).
- 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 are OK, go to step 4.
- With the connector still disconnected, 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, replace the keyless receiver unit.KEYLESS RECEIVER UNIT INPUT TEST
Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 2 PNK/BLK Under all conditions Check for continuity between the No. 2 terminal and driver's multiplex control unit B19 terminal:
There should be continuity.
There should be no continuity to ground.- An open in the wire
- Short to ground
3 GRN/BLU Under all conditions Check for continuity between the No. 3 terminal and driver's multiplex control unit B18 terminal:
There should be continuity.
There should be no continuity to ground.- An open in the wire
- Short to ground
6 LT BLU Under all conditions Check for continuity between the No. 6 terminal and driver's multiplex control unit B21 terminal:
There should be continuity.
There should be no continuity to ground.- An open in the wire
- Short to ground
1 BLK Under all conditions Check for continuity to ground:
There should be continuity.- Poor ground (G503)
- An open in the wire
5 YEL Ignition switch ON (II) Check for voltage to ground:
There should be battery voltage.- Blown No. 9 (10 A) fuse in the driver's under-dash fuse/relay box
- An open in the wire
7 WHT/YEL Under all conditions Check for voltage to ground:
There should be battery voltage.- Blown No. 13 (7.5 A) fuse in the passenger's under-dash fuse/relay box
- An open in the wire
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
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.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.