Keyless Access Systems (Keyless Access Control Unit and Electric Steering Lock) Input Test (Except KA KL models CVT)

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 ECM connector A (49P)*1 or PCM connector A (51P)*2	Check for continuity between terminal B21, and ECM connector A (49P)*1 or PCM connector A (51P)*2 terminal No. 17: There should be continuity.	An open in the S-NET wire ECM/PCM
  		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 Faulty under-dash fuse/relay box
  			Check for continuity between terminal B21 and body ground: There should be no continuity.	A short to ground in the S-NET wire
  *1: M/T *2: CVT

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, then go to step 6.

• 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
  B5*1	ORN	Clutch pedal pressed	Measure the voltage to ground: There should be about 5 V.	Faulty clutch pedal position switch A Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
  		Clutch pedal released	Measure the voltage to ground: There should be less than 0.2 V.	Faulty clutch pedal position switch A A short to ground in the wire
  B11*2	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*2	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
  C7	BLU	Electric steering lock (LOCK)	Measure the voltage to ground: There should be about 5 V.	Faulty electric steering lock A short to ground in the wire
  		Electric steering lock (UNLOCK)	Measure the voltage to ground: There should be less than 0.2 V.	Faulty electric steering lock An open or high resistance in the wire
  *1: M/T *2: CVT

Electric Steering Lock

NOTE: 

• SRS components are located in this area. Review the SRS component locations - Refer to: SRS Component Location Index ('12: Natural Gas models) , SRS Component Location Index ('12: except Natural Gas models) , SRS Component Location Index ('13-'15) , and precautions and procedures - Refer to: SRS Precautions and Procedures ('12) , SRS Precautions and Procedures ('13-'15) before doing repairs or servicing.
• Before testing, check for DTCs. If any DTCs are indicated, troubleshoot those DTCs first.

6. Press the engine start/stop button to select the OFF mode

7. Disconnect the electric steering lock 12P connector.

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

8. 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, then go to step 9.

9. Reconnect the connector, 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, go to step 10.

• Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
  3	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
  12	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
  7	BRN	In all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G401) An open or high resistance in the ground wire
  8	BLU	Disconnect the backup control unit 20P connector, and keyless access control unit connector B (32P)	Measure the voltage to ground: There should be about 5 V.	Faulty keyless access control unit A short to ground in the wire An open or high resistance in the wire
  			Measure the voltage to ground: There should be less than 0.2 V.	Faulty electric steering lock
  5	ORN	Power mode ON	Measure the voltage to ground: There should be battery voltage.	Faulty keyless access control unit An open or high resistance in the wire A short to ground in the wire

10. If multiple failures are found on more than one control unit, replace the keyless access control unit . If input failures are related to a particular control unit, replace the control unit.