Keyless Access System (Keyless Access Control Unit, Keyless Access and Electric Steering Lock) Input Test (2014 2015)

Keyless Access Control Unit

NOTE:

Before testing, check for DTCs. If any DTCs are indicated, troubleshoot those DTCs first.
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .
Before testing, make sure the No. B3-1 (60 A), No. B3-2 (60 A), No. B3-4 (30 A), and the No. B3-6 (30 A) fuses in the main under-hood fuse box are OK.
Before testing, make sure the No. C19 (7.5 A) and the No. C16 (10 A) fuses in the under-hood fuse/relay box are OK.
Before testing, make sure the D30 (10 A), No. D21 (20 A), No. D11 (10 A), and the No. D13 (7.5 A) fuses in the driver's under-dash fuse/relay box are OK.
Some models have the rear outer handle touch sensor. Perform the troubleshooting flow if there is an applicable.

1. Turn the vehicle to the OFF (LOCK) 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
B20	LT BLU	Under all conditions	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
C3	YEL	Under all conditions	Check for continuity between terminal C3 and body ground: There should be no continuity.	A short to ground in the L-LINE wire
B12	GRY	Press and hold the engine start/stop button	Measure the voltage to ground: There should be battery voltage.	Blown No. D30 (10 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box Faulty engine start/stop switch An open or high resistance in the wire
B8	BLU	Press and hold the engine start/stop button	Check for continuity to ground: There should be continuity.	Poor ground (G101) or an open in the ground wire Faulty engine start/stop switch An open or high resistance in the wire
B21	RED	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. 38: There should be continuity.	An open in the S-NET wire PCM
		Disconnect the driver's under-dash fuse/relay box connector H (13P)	Check for continuity between terminal B21 and driver's under-dash fuse/relay box connector H (13P) terminal No. 12: There should be continuity.	An open in the S-NET wire Faulty driver's 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

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	BLU	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. D30 (10 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box An open or high resistance in the wire
B14	PNK	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. C16 (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	BRN	In all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G502) An open or high resistance in the ground wire
B15	BRN	In all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G502) An open or high resistance in the ground wire
C10	LT GRN	Vehicle ON mode	Measure the voltage to ground: There should be battery voltage.	Blown No. B3-4 (30 A) fuse in the main under-hood fuse box Faulty under-dash subrelay box An open or high resistance in the wire
B28	YEL	Vehicle ON mode	Measure the voltage to ground: There should be battery voltage.	Blown No. D21 (20 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box Faulty under-dash subrelay box An open or high resistance in the wire
C12	PUR	Vehicle ON mode	Measure the voltage to ground: There should be battery voltage.	Blown No. D13 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box Faulty under-dash subrelay box An open or high resistance in the wire
C8	GRN	Vehicle ON mode	Measure the voltage to ground: There should be battery voltage.	Blown No. B3-6 (30 A) fuse in the main under-hood fuse box Faulty under-dash subrelay box An open or high resistance in the wire
C22	RED	Vehicle ON mode	Measure the voltage to ground: There should be battery voltage.	Blown No. B3-4 (30 A) fuse in the main under-hood fuse box Faulty under-dash subrelay box An open or high resistance in the wire

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
A30	BRN	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
A30	BRN	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	RED	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 (G505) or an open in the ground wire An open or high resistance in the wire
A23	RED	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
A19	BRN	Left rear door outer handle lock button pushed	Measure the voltage to ground: There should be less than 0.2 V.	Faulty left rear door outer handle Poor ground (G701) or an open in the ground wire An open or high resistance in the wire
A19	BRN	Left rear door outer handle lock button released	Measure the voltage to ground: There should be about 5 V.	Faulty left rear door outer handle A short to ground in the wire
A28	PUR	Right rear door outer handle lock button pushed	Measure the voltage to ground: There should be less than 0.2 V.	Faulty right rear door outer handle Poor ground (G751) or an open in the ground wire An open or high resistance in the wire
A28	PUR	Right rear door outer handle lock button released	Measure the voltage to ground: There should be about 5 V.	Faulty right rear door outer handle A short to ground in the wire
B19	LT BLU	Electric parking brake switch pulled (apply)	Measure the voltage to ground: There should be less than 0.2 V.	Faulty electric parking brake switch Faulty electric parking brake switch ground An open or high resistance in the wire
B19	LT BLU	Brake pedal pressed and electric parking brake switch pushed (released)	Measure the voltage to ground: There should be about 5 V.	Faulty electric parking brake switch A short to ground in the wire
A9	LT 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 (G705) or an open in the ground wire An open or high resistance in the wire
A9	LT BLU	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

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
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
B11	GRN	Shift lever in any position 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	WHT	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
B10	WHT	Shift lever in any position other than P	Measure the voltage to ground: There should be less than 0.2 V.	Faulty park pin switch Poor ground (G501) 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. C19 (7.5 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
B1	LT GRN	Brake pedal released	Measure the voltage to ground: There should be less than 0.2 V.	Faulty brake pedal position switch
C7	ORN	Press the engine start/stop button	Measure the voltage to ground: The voltage should be 5 V, then changes to 0 V and returns to 5 V.	Faulty electric steering lock An open or high resistance in the wire A short to ground in the wire

Electric Steering Lock

NOTE:

SRS components are located in this area. Review the SRS component locations , and precautions and procedures before doing repairs or servicing.
Before testing, check for DTCs. If any DTCs are indicated, troubleshoot those DTCs first.

6. Turn the vehicle to the OFF (LOCK) 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	BLU	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. D30 (10 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box An open or high resistance in the wire
12	ORN	Vehicle ON mode	Measure the voltage to ground: There should be battery voltage.	Blown No. D11 (10 A) fuse in the driver's under-dash fuse/relay box Faulty driver's 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 (G502) An open or high resistance in the ground wire
8	ORN	Press the engine start/stop button	Measure the voltage to ground: The voltage should be 5 V, then changes to 0 V and returns to 5 V.	Faulty keyless access control unit An open or high resistance in the wire A short to ground in the wire
5	LT GRN	Vehicle ON mode	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.