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

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 - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test mode A - Initial Communication and DTC Checks .
Before testing, make sure the No. A1 (100 A) and the No. A2 (70 A) fuses in the 12 volt battery terminal fuse box are OK.
Before testing, make sure the No. B21 (15 A) and the No. B29 (10 A) fuses in the under-hood fuse/relay box are OK.
Before testing, make sure the No. C32 (15 A) and the No. C3 (10 A) fuses in the under-dash fuse/relay box are OK.
Some mode ls have the rear outer handle touch sensor. Perform the troubleshooting flow where 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.

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
C4	LT BLU	Under all conditions	Check for continuity between terminal C4 and data link connector (DLC) terminal No. 7: There should be continuity.	An open or high resistance in the K LINE wire
C4	LT BLU	Under all conditions	Check for continuity between terminal C4 and body ground: There should be no continuity.	A short to ground in the K LINE wire
C6	YEL	Under all conditions	Check for continuity between terminal C4 and data link connector (DLC) terminal No. 15: There should be continuity.	An open or high resistance in the L LINE wire
C6	YEL	Under all conditions	Check for continuity between terminal C6 and body ground: There should be no continuity.	A short to ground in the L LINE wire

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
B10	BLU	Press the engine start/stop button	Measure the voltage to ground: There should be battery voltage.	Blown No. C3 (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
B11	LT BLU	Press the engine start/stop button	Check for continuity to ground: There should be continuity.	Faulty keyless access control unit Faulty engine start/stop switch An open or high resistance in the wire
C5	BLU	Jump the SCS line with the HDS, disconnect PCM connector A (51P)	Check for continuity between terminal under-dash fuse/relay box connector Q (40P) terminal No. 21 and PCM connector A (51P) terminal No. 21: There should be continuity.	An open in the S-NET wire PCM
		Disconnect the under-dash fuse/relay box connector D (24P)	Check for continuity between terminal C5 and under-dash fuse/relay box connector D (24P) terminal No. 18: 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 D (24P)	Check for continuity between terminal C5 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	GRY	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. C3 (10 A) fuse in the under-dash fuse/relay box Faulty under-dash fuse/relay box An open or high resistance in the wire
B18	RED	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. B29 (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 mode s	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
B36	BLK	In all power mode s	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

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
B30	WHT	Vehicle ON mode.	Measure the voltage to ground: There should be battery voltage.	Blown No. D1-2 (30 A) fuse in the auxiliary under-dash fuse box Faulty under-dash subrelay box An open or high resistance in the wire
B34	WHT	Vehicle ON mode.	Measure the voltage to ground: There should be battery voltage.	Blown No. C32 (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
B29	YEL	Vehicle ON mode.	Measure the voltage to ground: There should be battery voltage.	Blown No. D4 (30 A) fuse in the auxiliary under-dash fuse box Faulty under-dash subrelay box An open or high resistance in the wire
B27	BRN	Vehicle ON mode.	Measure the voltage to ground: There should be battery voltage.	Blown No. D1-2 (30 A) fuse in the auxiliary under-dash fuse box Faulty under-dash subrelay box An open or high resistance in the wire
C14	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 (G401) or an open in the ground wire An open or high resistance in the wire
C14	WHT	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
C13	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 (G403) or an open in the ground wire An open or high resistance in the wire
C13	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
B1	BLU	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
B1	BLU	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

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
C16	PUR	Tailgate outer handle switch pushed	Measure the voltage to ground: There should be less than 0. 2 V.	Faulty tailgate outer handle switch An open or high resistance in the wire
C16	PUR	Tailgate outer handle switch released	Measure the voltage to ground: There should be about 5 V.	Faulty tailgate outer handle switch A short to ground in the wire
C10^*2	RED	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
C10^*2	RED	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
C9	LT GRN^1 TAN^2	Shift lever in P position^2 Clutch pedal released^1	Measure the voltage to ground: There should be about 5 V.	Faulty clutch pedal position switch^1 Faulty park pin switch^2 A short to ground in the wire
C9	LT GRN^1 TAN^2	Shift lever in any position other than P^2 Clutch pedal pressed^1	Measure the voltage to ground: There should be less than 0. 2 V.	Faulty clutch pedal position switch^1 Faulty park pin switch^2 Poor ground (G302) ^1 (G403) ^2 or an open in the ground wire An open or high resistance in the wire
B19	LT GRN	Brake pedal pressed	Measure the voltage to ground: There should be battery voltage.	Blown No. B6 (10 A) fuse in the 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
B19	LT GRN	Brake pedal released	Measure the voltage to ground: There should be less than 0. 2 V.	Faulty brake pedal position switch
B3^*3	BRN	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
B3^*3	BRN	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

*3: With electric steering lock

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	GRY	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. C3 (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	WHT	Vehicle ON mode.	Measure the voltage to ground: There should be battery voltage.	Blown No. C32 (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	BLK	In all power mode s	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	BRN	Electric steering lock (LOCK)	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
8	BRN	Electric steering lock (UNLOCK)	Measure the voltage to ground: There should be less than 0. 2 V.	Faulty electric steering lock
5	TAN	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.