Keyless Access System (Keyless Access Control Unit) Input Test (2014 - 2015)

Keyless Access Control Unit 

1. Press the engine start/stop button to select the OFF mode.
2. Disconnect the keyless access control unit connectors
   NOTE: All connector views are shown from the wire side of the female terminals.

   Courtesy of HONDA, U.S.A., INC.

3. Inspect the connectors 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. With the connectors still disconnected, do the following input tests:
   • If any test indicates a problem, find and correct the cause, then recheck the system.
   • If all the input tests prove OK, then go to step 5.

     Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
     B20	LT BLU	Under all conditions	Check for continuity between terminal B20 and data link connector (DLC) terminal No. 7:There should be continuity.	An open or high resistance in the K-LINE wire
     			Check for continuity between terminal B20 and body ground:There should be no continuity.	A short to ground in the K-LINE wire
     C3	YEL	Under all conditions	Check for continuity between terminal C3 and data link connector (DLC) terminal No. 15:There should be continuity.	An open or high resistance in the L-LINE wire
     			Check for continuity between terminal C3 and body ground:There should be no continuity.	A short to ground in the L-LINE wire
     B12	GRN	Press the engine start/stop button	Measure the voltage to ground:There should be battery voltage.	Blown No. B31 (10 A) fuse in the under-dash fuse/relay box Faulty under-dash fuse/relay box Faulty engine start/stop switch An open or high resistance in the wire
     B8	GRY	Press the engine start/stop button	Check for continuity to ground:There should be continuity.	Poor ground (G503) or an open in the ground wire Faulty engine start/stop switch An open or high resistance in the wire
     B21	LT GRN	Jump the SCS line with the HDS, disconnect PCM connector A (51P)	Check for continuity between terminal B21 and PCM connector A (51P) terminal No. 17:There should be continuity.	An open in the S-NET wire Faulty under-dash fuse/relay box
     		Disconnect the under-dash fuse/relay box connector P (20P)	Check for continuity between terminal B21 and under-dash fuse/relay box connector P (20P) terminal No. 4:There should be continuity.	An open in the S-NET wire
     			Check for continuity between terminal B21 and body ground:There should be no continuity.	A short to ground in the S-NET wire

5. Reconnect the connectors, and do the following input tests:
   • 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 access control unit .

     Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
     A1	YEL	Under all conditions	Measure the voltage to ground:There should be battery voltage.	Blown No. B31 (10 A) fuse in the under-dash fuse/relay box Faulty under-dash fuse/relay box An open or high resistance in the wire
     B14	WHT	Under all conditions	Measure the voltage to ground:There should be battery voltage.	Blown No. A29 (10 A) fuse in the under-hood fuse/relay box Faulty under-hood fuse/relay box An open or high resistance in the wire
     A17	BLK	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G101) An open or high resistance in the ground wire
     B15	BLK	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G101) An open or high resistance in the ground wire
     C10	RED	Power mode ON	Measure the voltage to ground:There should be battery voltage.	Blown No. A2-1 (30 A) fuse in the under-hood fuse/relay box Faulty under-dash subrelay box An open or high resistance in the wire
     B28	YEL	Power mode ON	Measure the voltage to ground:There should be battery voltage.	Blown No. B4 (15 A) fuse in the under-dash fuse/relay box Faulty under-dash fuse/relay box Faulty under-dash subrelay box An open or high resistance in the wire
     C12	PUR	Power mode ON	Measure the voltage to ground:There should be battery voltage.	Blown No. B19 (7.5 A) fuse in the under-dash fuse/relay box Faulty under-dash fuse/relay box Faulty under-dash subrelay box An open or high resistance in the wire
     C8	YEL	Power mode ON	Measure the voltage to ground:There should be battery voltage.	Blown No. A2-7 (30 A) fuse in the under-hood fuse/relay box Faulty under-dash subrelay box An open or high resistance in the wire
     C22	BLK	Power mode ON	Measure the voltage to ground:There should be battery voltage.	Blown No. A2-1 (30 A) fuse in the under-hood fuse/relay box Faulty under-dash subrelay box An open or high resistance in the wire
     A30	WHT	Driver's door outer handle lock button pushed	Measure the voltage to ground:There should be less than 0.2 V.	Faulty driver's door outer handle Poor ground (G502) or an open in the ground wire An open or high resistance in the wire
     		Driver's door outer handle lock button released	Measure the voltage to ground:There should be about 5 V.	Faulty driver's door outer handle A short to ground in the wire
     A23	WHT	Front passenger's door outer handle lock button pushed	Measure the voltage to ground:There should be less than 0.2 V.	Faulty front passenger's door outer handle Poor ground (G504) or an open in the ground wire An open or high resistance in the wire
     		Front passenger's door outer handle lock button released	Measure the voltage to ground:There should be about 5 V.	Faulty front passenger's door outer handle A short to ground in the wire
     B19	LT GRN	Parking brake lever pulled	Measure the voltage to ground:There should be less than 0.2 V.	Faulty parking brake switch Faulty parking brake switch ground An open or high resistance in the wire
     		Parking brake lever released	Measure the voltage to ground:There should be about 5 V.	Faulty parking brake switch A short to ground in the wire
     A9	BLU	Trunk lid outer handle button pushed	Measure the voltage to ground:There should be less than 0.2 V.	Faulty trunk lid outer handle switch Poor ground (G701) or an open in the ground wire An open or high resistance in the wire
     		Trunk lid outer handle button released	Measure the voltage to ground:There should be about 5 V.	Faulty trunk lid outer handle switch A short to ground in the wire
     B11	GRN	Shift lever in P position	Measure the voltage to ground:There should be less than 0.2 V.	Faulty transmission range switch Poor ground (G101) or an open in the ground wire An open or high resistance in the wire
     		Shift lever in any other than P	Measure the voltage to ground:There should be about 5 V.	Faulty transmission range switch A short to ground in the wire
     B10	LT BLU	Shift lever in P position	Measure the voltage to ground:There should be about 5 V.	Faulty park pin switch A short to ground in the wire
     		Shift lever in any other than P	Measure the voltage to ground:There should be less than 0.2 V.	Faulty park pin switch Poor ground (G602) or an open in the ground wire An open or high resistance in the wire
     B1	LT GRN	Brake pedal pressed	Measure the voltage to ground:There should be battery voltage.	Blown No. A17 (15 A) fuse in the under-hood fuse/relay box Faulty under-hood fuse/relay box Faulty brake pedal position switch An open or high resistance in the wire A short to ground in the wire
     		Brake pedal released	Measure the voltage to ground:There should be less than 0.2 V.	Faulty brake pedal position switch