Keyless Access System (Body Control Module and Electric Steering Lock) Input Test

SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service.

NOTE:

Make sure the fuses associated with the system is OK.
If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A .

Body Control Module

1. Turn the vehicle to the OFF (LOCK) mode.

2. Disconnect the body control module connectors.

Body Control Module Connector A (14P) (female terminals): Body Control Module Connector B (36P) (female terminals): Body Control Module Connector C (28P) (female terminals): Body Control Module Connector D (40P) (female terminals): Body Control Module Connector E (24P) (female terminals): Body Control Module Connector F (36P) (female terminals): Body Control Module Connector G (32P) (female terminals):

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

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.

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
D36	LT BLU	Under all conditions	Check for continuity between terminal D36 and data link connector (DLC) terminal No. 7: There should be continuity.	An open or high resistance in the K LINE wire
D36	LT BLU	Under all conditions	Check for continuity between terminal D36 and body ground: There should be no continuity.	A short to ground in the K LINE wire
F21	RED	Under all conditions	Check for continuity between terminal F21 and data link connector (DLC) terminal No. 15: There should be continuity.	An open or high resistance in the L-LINE wire
F21	RED	Under all conditions	Check for continuity between terminal F21 and body ground:There should be no continuity.	A short to ground in the L-LINE wire
G18	YEL	Press the engine start/stop switch	Measure the voltage to ground:There should be battery voltage.	Faulty engine start/stop switch An open or high resistance in the wire
G9	BLK	Press the engine start/stop switch	Check for continuity to ground:There should be continuity.	Faulty engine start/stop switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire

Reconnect the connectors, and do the following input tests:

If any test indicates a problem, find and correct the cause, then recheck the system.
With electric steering lock: If all the input tests prove OK, then go to step 6.
Without electric steering lock: If all the input tests prove OK, replace the body control module .

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
B16	RED	Under all conditions	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire
C27	WHT	Under all conditions	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire
A2	BLK	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
A8	BLK	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
G27	RED	Vehicle ON mode	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire
E1	BLU	Vehicle ON mode	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
G10	YEL	Vehicle ON mode	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire
G11	LT BLU	Vehicle ON mode	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire
C1	GRN	Shift lever in P position/mode	Measure the voltage to ground:There should be less than 0.2 V.	Faulty transmission range switch An open or high resistance in the wire
C1	GRN	Shift lever in any other position/mode other than P	Measure the voltage to ground:There should be battery voltage.	Faulty transmission range switch A short to ground in the wire
C26	LT BLU	Shift lever in P position/mode	Measure the voltage to ground:There should be battery voltage.	Faulty park pin switch A short to ground in the wire
C26	LT BLU	Shift lever in any other position/mode than P	Measure the voltage to ground:There should be less than 0.2 V.	Faulty park pin switch Poor ground (G402) or an open in the ground wire An open or high resistance in the wire
C25	GRN	Brake pedal pressed	Measure the voltage to ground:There should be battery voltage.	Faulty brake pedal position switch An open or high resistance in the wire
G3*	PUR	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
G3*	PUR	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

*: With electric steering lock

Electric Steering Lock

6. Turn the vehicle to the OFF (LOCK) mode.

7. Disconnect the electric steering lock 12P connector.

Electric Steering Lock 12P Connector (female terminals)

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

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.

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	RED	Under all conditions	Measure the voltage to ground:There should be battery voltage.	An open or high resistance in the wire
12	BLU	Vehicle ON mode	Measure the voltage to ground:There should be battery voltage.	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	PUR	Electric steering lock (LOCK)	Measure the voltage to ground:There should be about 5 V.	Faulty body control module A short to ground in the wire
8	PUR	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
5	YEL	Vehicle ON mode	Measure the voltage to ground:There should be battery voltage.	Faulty body control module 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 body control module . If input failures are related to a particular control unit, replace the control unit.