MICU Input Test (2016 2017)

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. C16 (10 A) fuse in the under-hood fuse/relay box is OK.
Before testing, make sure the No. D10 (7.5 A), No. D11 (10 A), No. D21 (20 A), and No. D26 (7.5 A) fuses in the driver's under-dash fuse/relay box are OK.

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

2. Disconnect driver's under-dash fuse/relay box connectors E, F, G, H, and P

.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 are 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.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired results not obtained
G1	WHT	Disconnect relay control module connector B (16P)	Check for continuity between terminal G1 and relay control module connector B (16P) terminal No. 16: There should be continuity.	An open in the B-CAN wire
G2	RED	Disconnect relay control module connector B (16P)	Check for continuity between terminal G2 and relay control module connector B (16P) terminal No. 15: There should be continuity.	An open in the B-CAN wire
G1	WHT	Disconnect the power window master switch 37P connector	Check for continuity between terminal G1 and power window master switch 37P connector terminal No. 30: There should be continuity.	An open in the B-CAN wire
G2	RED	Disconnect the power window master switch 37P connector	Check for continuity between terminal G2 and power window master switch 37P connector terminal No. 28: There should be continuity.	An open in the B-CAN wire
G1	WHT	Disconnect audio-navigation unit connector A (24P)	Check for continuity between terminal G1 and audio-navigation unit connector A (24P) terminal No. 2: There should be continuity.	An open in the B-CAN wire
G2	RED	Disconnect audio-navigation unit connector A (24P)	Check for continuity between terminal G2 and audio-navigation unit connector A (24P) terminal No. 4: There should be continuity.	An open in the B-CAN wire
G1	WHT	Disconnect the windshield wiper control unit 6P connector	Check for continuity between terminal G1 and windshield wiper control unit 6P connector terminal No. 5: There should be continuity.	An open in the B-CAN wire
G2	RED	Disconnect the windshield wiper control unit 6P connector	Check for continuity between terminal G2 and windshield wiper control unit 6P connector terminal No. 3: There should be continuity.	An open in the B-CAN wire

*1: USA and Canada models
*2: Mexico models
*3: With automatic wiper
*4: With parking and back-up sensor
*5: With BSI
*6: With AcuraLink

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired results not obtained
G1 *1	WHT	Disconnect keyless access/TPMS control unit connector C (20P)	Check for continuity between terminal G1 and keyless access/TPMS control unit connector C (20P) terminal No. 11: There should be continuity.	An open in the B-CAN wire
G2 *1	RED		Check for continuity between terminal G2 and keyless access/TPMS control unit connector C (20P) terminal No. 1: There should be continuity.	An open in the B-CAN wire
G1 *2	WHT	Disconnect keyless access control unit connector B (28P)	Check for continuity between terminal G1 and keyless access control unit connector B (28P) terminal No. 7: There should be continuity.	An open in the B-CAN wire
G2 *2	RED	Disconnect keyless access control unit connector B (28P)	Check for continuity between terminal G2 and keyless access control unit connector B (28P) terminal No. 6: There should be continuity.	An open in the B-CAN wire
G1	WHT	Disconnect gauge control module connector A (32P)	Check for continuity between terminal G1 and gauge control module connector A (32P) terminal No. 26: There should be continuity.	An open in the B-CAN wire
G2	RED	Disconnect gauge control module connector A (32P)	Check for continuity between terminal G2 and gauge control module connector A (32P) terminal No. 25: There should be continuity.	An open in the B-CAN wire
G1	WHT	Disconnect climate control unit connector A (28P)	Check for continuity between terminal G1 and climate control unit connector A (28P) terminal No. 9: There should be continuity.	An open in the B-CAN wire
G2	RED	Disconnect climate control unit connector A (28P)	Check for continuity between terminal G2 and climate control unit connector A (28P) terminal No. 8: There should be continuity.	An open in the B-CAN wire
G1	WHT	Disconnect the headlight leveling control unit 12P connector	Check for continuity between terminal G1 and headlight leveling control unit 12P terminal No. 8: There should be continuity.	An open in the B-CAN wire
G2	RED		Check for continuity between terminal G2 and headlight leveling control unit 12P terminal No. 7: There should be continuity.	An open in the B-CAN wire
G1	WHT	Disconnect power seat control unit connector A (20P)	Check for continuity between terminal G1 and power seat control unit connector A (20P) terminal No. 17: There should be continuity.	An open in the B-CAN wire
G2	RED	Disconnect power seat control unit connector A (20P)	Check for continuity between terminal G2 and power seat control unit connector A (20P) terminal No. 16: There should be continuity.	An open in the B-CAN wire

*1: USA and Canada models
*2: Mexico models
*3: With automatic wiper
*4: With parking and back-up sensor
*5: With BSI
*6: With AcuraLink

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired results not obtained
G1 *3	WHT	Disconnect the automatic lighting/rain sensor 5P connector	Check for continuity between terminal G1 and automatic lighting/rain sensor 5P connector terminal No. 4: There should be continuity.	An open in the B-CAN wire
G2 *3	RED	Disconnect the automatic lighting/rain sensor 5P connector	Check for continuity between terminal G2 and automatic lighting/rain sensor 5P connector terminal No. 3: There should be continuity.	An open in the B-CAN wire
G1 *4	WHT	Disconnect the parking and back-up sensor control unit 24P connector	Check for continuity between terminal G1 and parking and back-up sensor control unit 24P connector terminal No. 10: There should be continuity.	An open in the B-CAN wire
G2 *4	RED		Check for continuity between terminal G2 and parking and back-up sensor control unit 24P connector terminal No. 22: There should be continuity.	An open in the B-CAN wire
G1 *5	WHT	Disconnect the left side BSI radar unit 6P connector	Check for continuity between terminal G1 and left side BSI radar unit 6P connector terminal No. 5: There should be continuity.	An open in the B-CAN wire
G2 *5	RED	Disconnect the left side BSI radar unit 6P connector	Check for continuity between terminal G2 and left side BSI radar unit 6P connector terminal No. 3: There should be continuity.	An open in the B-CAN wire
G1 *5	WHT	Disconnect the right side BSI radar unit 6P connector	Check for continuity between terminal G1 and right side BSI radar unit 6P connector terminal No. 5: There should be continuity.	An open in the B-CAN wire
G2 *5	RED	Disconnect the right side BSI radar unit 6P connector	Check for continuity between terminal G2 and right side BSI radar unit 6P connector terminal No. 3: There should be continuity.	An open in the B-CAN wire
G1 *6	WHT	Disconnect the telematics control unit 36P connector	Check for continuity between terminal G1 and telematics control unit 36P connector terminal No. 34: There should be continuity.	An open in the B-CAN wire
G2 *6	RED	Disconnect the telematics control unit 36P connector	Check for continuity between terminal G2 and telematics control unit 36P connector terminal No. 33: There should be continuity.	An open in the B-CAN wire
G11	LT BLU	Under all conditions	Check for continuity between terminal G11 and data link connector (DLC) terminal No. 7: There should be continuity.	An open in the K-LINE wire

*1: USA and Canada models
*2: Mexico models
*3: With automatic wiper
*4: With parking and back-up sensor
*5: With BSI
*6: With AcuraLink

5. Reconnect the connectors to the driver's under-dash fuse/relay box, 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, the MICU must be faulty; replace the driver's under-dash fuse/relay box .

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired results not obtained
F23	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 An open or high resistance in the wire
G7	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 An open or high resistance in the wire
F28	TAN	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 An open or high resistance in the wire
G9	TAN	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 An open or high resistance in the wire
E33	YEL	Vehicle ON mode	Measure the voltage to ground: There should be battery voltage.	Blown No. D10 (7.5 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire
G14	YEL	Vehicle ON mode	Measure the voltage to ground: There should be battery voltage.	Blown No. D10 (7.5 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire
F5	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 An open or high resistance in the wire
G8	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 An open or high resistance in the wire
G3	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
H1	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
P2	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