Keyless/Power Door Locks/Security System (MICU, Door Multiplex Control Unit, Rear MICU, Front Passenger's Power Window Switch, and Relay Control Module) Input Test (2014 2015)

NOTE:

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, or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode B - Control Unit Not Communicating, or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode C - No DTCs and Output Won't Shut OFF, or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode D - No DTCs and Output Won't Turn ON, or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS) (2014 2015), .
Before testing, make sure the No. C16 (10 A) and No. C22 (10 A) fuses in the under-hood fuse/relay box are OK.
Before testing, make sure the No. D1 (10 A), D2 (7.5 A), D3 (7.5 A), D4 (10 A), D5 (7.5 A), D6 (7.5 A), D7 (20 A), D11 (7.5 A), D19 (20 A), and No. D26 (7.5 A) fuses in the driver's under-dash fuse/relay box are OK.
Before testing, make sure the No. E6 (20 A) fuse in the passenger's under-dash/fuse relay box is OK.
Before testing, make sure the headlights, parking lights, side marker lights, taillights, and horns are work properly.
There are two pairs of fuses in the same circuit (No. D2 and No. D5 fuses, No. D1 and No. D4 fuses). If one fuse is blown, make sure to check the other fuse in the same circuit. If necessary, replace the blown fuse(s).

MICU

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

2. Disconnect driver's under-dash fuse/relay box connectors E, F, G, H, M, and P - Refer to: Driver's Under-Dash Fuse/Relay Box Removal and Installation, or Passenger's Under-Dash Fuse/Relay Box Removal and Installation

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, go to step 5.

NOTE: These are door lock actuator operation tests for keyless entry.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired resultis not obtained
M7	RED	Connect battery power * to M3 (or M7), and terminal M7 (or M3) and ground with jumper wires.	Check actuator operation:The driver's door lock actuator should LOCK (or UNLOCK).	Faulty driver's door lock actuator An open or high resistance in the wire
M3	LT BLU
M6	LT GRN	Connect battery power * to M4 (or M6), and terminal M6 (or M4) and ground with jumper wires.	Check actuator operation:The front passenger's door lock actuator and right rear door lock actuatorshould LOCK (or UNLOCK).	Faulty front passenger's door lock actuator Faulty right rear door lock actuator An open or high resistance in the wire
M4	ORN
E14	BLU	Connect terminals F2 * and E14 (or E15), and terminal E15 (or E14) and ground with jumper wires.	Check actuator operation:The left rear door lock actuator should LOCK (or UNLOCK).	Faulty left rear door lock actuator An open or high resistance in the wire
E15	YEL

*: Use a fused jumper wire with an appropriate amperage fuse.

5. Reconnect the connectors to the driver's under-dash fuse/relay box; 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 resultis not obtained
G16	GRN	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
F2	YEL	Under all conditions	Measure the voltage to ground:There should be battery voltage.	Blown No. B3-1 (50 A) fuse in the main under-hood fuse box Faulty main under-hood fuse box An open or high resistance in the wire
H1	BLK	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
G6	BLK	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G506) An open or high resistance in the ground wire
P2	BRN	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G501) An open or high resistance in the ground wire
E24	LT BLU	Driver's door open	Measure the voltage to ground:There should be less than 0.2 V.	Faulty driver's door switch Faulty driver's door switch ground An open or high resistance in the wire
E24	LT BLU	Driver's door closed	Measure the voltage to ground:There should be about 5 V.	Faulty driver's door switch A short to ground in the wire

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired resultis not obtained
E25	YEL	Front passenger's door open	Measure the voltage to ground:There should be less than 0.2 V.	Faulty front passenger's door switch Faulty front passenger's door switch ground An open or high resistance in the wire
E25	YEL	Front passenger's door closed	Measure the voltage to ground:There should be about 5 V.	Faulty front passenger's door switch A short to ground in the wire
M1	LT GRN	Transmission range switch in P	Measure the voltage to ground:There should be less than 0.2 V.	Faulty or improperly adjusted transmission range switch Poor ground (G101) or an open in the ground wire An open or high resistance in the wire
M1	LT GRN	Transmission range switch in any other position than P	Measure the voltage to ground:There should be about 5 V.	Faulty or improperly adjusted transmission range switch A short to ground in the wire

Rear MICU

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

7. Disconnect rear fuse box connectors A and B.

NOTE: All connector views are wire side of female terminals.

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, go to step 9.

9. 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, go to step 10.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
A1	BLK/WHT	In all ignition switch positions	Check for continuity to ground:There should be continuity.	Poor ground (G605) An open or high resistance in the ground wire
B16	BLK/WHT	In all ignition switch positions	Check for continuity to ground:There should be continuity.	Poor ground (G605) An open or high resistance in the ground wire
B26	BLK	In all ignition switch positions	Check for continuity to ground:There should be continuity.	Poor ground (G606) An open or high resistance in the ground wire
A29	BLK	In all ignition switch positions	Check for continuity to ground:There should be continuity.	Poor ground (G606) An open or high resistance in the ground wire
B12	GRN	Left rear door open	Check for continuity to ground:There should be continuity.	Faulty left rear door switch Faulty left rear door switch ground An open or high resistance in the wire
B12	GRN	Left rear door closed	Check for continuity to ground:There should be no continuity.	Faulty left rear door switch A short to ground in the wire
B11	WHT/PNK	Right rear door open	Check for continuity to ground:There should be continuity.	Faulty right rear door switch Faulty right rear door switch ground An open or high resistance in the wire
B11	WHT/PNK	Right rear door closed	Check for continuity to ground:There should be no continuity.	Faulty right rear door switch A short to ground in the wire
B21	GRY/YEL	Right rear door lock knob switch in UNLOCK	Check for continuity to ground:There should be continuity.	Faulty right rear door lock knob switch Poor ground (G604) or an open in the ground wire An open or high resistance in the wire
B21	GRY/YEL	Right rear door lock knob switch in LOCK	Check for continuity to ground:There should be no continuity.	Faulty right rear door lock knob switch A short to ground in the wire
B3	PUR	Left rear door lock knob switch in UNLOCK	Check for continuity to ground:There should be continuity.	Faulty left rear door lock knob switch Poor ground (G602) or an open in the ground wire An open or high resistance in the wire
B3	PUR	Left rear door lock knob switch in LOCK	Check for continuity to ground:There should be no continuity.	Faulty left rear door lock knob switch A short to ground in the wire

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
A9	GRN	Power tailgate closer unit connector B (6P) disconnected	Check for continuity between terminal A9 and power tailgate closer unit 6P connector terminal No. 2:There should be continuity.	An open or high resistance in the wire

Door Multiplex Control Unit

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

11. Disconnect the power window master switch 37P connector

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

12. Inspect the connector and socket terminals to be sure they are all making good contact:

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 13.

13. With the connector 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, go to step 14.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired resultis not obtained
36	WHT	Disconnect the front passenger's power window switch 37P connector and the moonroof control unit/motor 14P connector	Check for continuity between terminal No. 36 and front passenger's power window switch 37P connector terminal No. 34:There should be continuity.	An open in the LIN (WINDOW) wire
			Check for continuity between terminal No. 36 and moonroof control unit/motor 14P connector terminal No. 12:There should be continuity.	An open in the LIN (WINDOW) wire
			Check for continuity to ground:There should be no continuity.	A short to ground in the LIN (WINDOW) wire

14. Reconnect the connector, 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 15.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired resultis not obtained
25	LT GRN	Vehicle ON mode	Measure the voltage to ground:There should be battery voltage.	Blown No. D26 (7.5 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
26	GRN	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
4	WHT	Under all conditions	Measure the voltage to ground:There should be battery voltage.	Blown No. D19 (20 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
3	BLK	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G506) An open or high resistance in the ground wire
31	BLK	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G501) An open or high resistance in the ground wire
35	PNK	Driver's door key cylinder switch in LOCK	Measure the voltage to ground:There should be less than 0.2 V.	Faulty driver's door key cylinder switch Poor ground (G501) or an open in the ground wire An open or high resistance in the wire
35	PNK	Driver's door key cylinder switch in neutral or UNLOCK	Measure the voltage to ground:There should be about 5 V.	Faulty driver's door key cylinder switch A short to ground in the wire
34	BRN	Driver's door key cylinder switch in UNLOCK	Measure the voltage to ground:There should be less than 0.2 V.	Faulty driver's door key cylinder switch Poor ground (G501) or an open in the ground wire An open or high resistance in the wire
34	BRN	Driver's door key cylinder switch in neutral or LOCK	Measure the voltage to ground:There should be about 5 V.	Faulty driver's door key cylinder switch An open or high resistance in the wire

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired resultis not obtained
33	YEL	Driver's door lock knob switch in LOCK	Measure the voltage to ground:There should be less than 0.2 V.	Faulty driver's door lock knob switch Poor ground (G501) or an open in the ground wire An open or high resistance in the wire
33	YEL	Driver's door lock knob switch in UNLOCK	Measure the voltage to ground:There should be about 5 V.	Faulty driver's door lock knob switch A short to ground in the wire
32	WHT	Driver's door lock knob switch in UNLOCK	Measure the voltage to ground:There should be less than 0.2 V.	Faulty driver's door lock knob switch Poor ground (G501) or an open in the ground wire An open or high resistance in the wire
32	WHT	Driver's door lock knob switch in LOCK	Measure the voltage to ground:There should be about 5 V.	Faulty driver's door lock knob switch A short to ground in the wire
14	LT GRN	Driver's door power tailgate/fuel fill door opener switch pressed.	Measure the voltage to ground:There should be less than 0.2 V.	Faulty driver's door power tailgate/fuel fill door opener switch Poor ground (G506) or an open in the ground wire An open or high resistance in the wire
14	LT GRN	Driver's door power tailgate/fuel fill door opener switch released.	Measure the voltage to ground:There should be about 5 V.	Faulty driver's door power tailgate/fuel fill door opener switch A short to ground in the wire

Front Passenger's Power Window Switch

15. Turn the vehicle to the OFF (LOCK) mode, open and close the driver's door.

16. Disconnect the front passenger's power window switch 37P connector - Refer to: Front Passenger's Power Window Switch Removal and Installation, or Rear Power Window Switch Removal and Installation

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

17. 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, go to step 18.

18. With the connector 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, go to step 19.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired resultis not obtained
34	WHT	Disconnect the power window master switch 37P connector and the moonroof control unit/motor 14P connector	Check for continuity between terminal No. 34 and power window master switch 37P connector terminal No. 36:There should be continuity.	An open in the LIN (WINDOW) wire
			Check for continuity between terminal No. 34 and moonroof control unit/motor 14P connector terminal No. 12:There should be continuity.	An open in the LIN (WINDOW) wire
			Check for continuity to ground:There should be no continuity.	A short to ground in the LIN (WINDOW) wire

19. Reconnect the connector, 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 20.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
4	GRN	Under all conditions	Measure the voltage to ground:There should be battery voltage.	Blown No. E6 (20 A) fuse in the passenger's under-dash fuse/relay box Faulty passenger's under-dash fuse/relay box An open or high resistance in the wire
3	BLK	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G506) An open or high resistance in the ground wire
29	BRN	Front passenger's door lock knob switch in UNLOCK	Measure the voltage to ground:There should be less than 0.2 V.	Front passenger's door lock knob switch Poor ground (G507) or an open in the ground wire An open or high resistance in the wire
29	BRN	Front passenger's door lock knob switch in LOCK	Measure the voltage to ground:There should be about 5 V.	Front passenger's door lock knob switch A short to ground in the wire

Relay Control Module

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

21. Disconnect the relay control module B (16P) and D (14P) connectors

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

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

22. 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, go to step 23.

23. Reconnect the connector, 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 24.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
B10	YEL	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
D9	PUR	Vehicle ON mode	Measure the voltage to ground:There should be battery voltage.	Blown No. B8 (20 A) and B2-6 (30 A) fuses in the main under-hood fuse box Faulty horn relay An open or high resistance in the wire
B1	BLK	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G204) An open or high resistance in the ground wire
D12	BLK	In all power modes	Measure the voltage to ground:There should be less than 0.2 V.	Poor ground (G204) An open or high resistance in the ground wire

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
B7	GRN	Hood closed	Measure the voltage to ground:There should be less than 0.2 V.	Faulty security hood switch Poor ground (G202) or an open in the ground wire An open or high resistance in the wire
B7	GRN	Hood open	Measure the voltage to ground:There should be about 5 V.	Faulty security hood switch A short to ground in the wire

24. If multiple failures are found on more than one control unit, replace the driver's under-dash fuse/relay box (includes the MICU) - Refer to: Driver's Under-Dash Fuse/Relay Box Removal and Installation, or Passenger's Under-Dash Fuse/Relay Box Removal and Installation . If input failures are related to a particular control unit, replace the control unit.