Turn Signal/Hazard Warning Lights (MICU) Input Test

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 Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS)Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode B - Control Unit Not Communicating Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode C - No DTCs and Output Won't Shut OFF Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode D - No DTCs and Output Won't Turn ON .
Before testing, make sure the No. A15 (10 A) and No. A29 (10 A) fuses in the under-hood fuse/relay box are OK.
Before testing, make sure the No. B5 (10 A) fuse in the under-dash fuse/relay box is OK.

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

2. Disconnect the following connectors.

Under-dash fuse/relay box connector B (44P)

Under-dash fuse/relay box connector C (38P)

Under-dash fuse/relay box connector D (32P)

Under-dash fuse/relay box connector K (12P)

Under-dash fuse/relay box connector M (7P)

Under-dash fuse/relay box connector R (8P)

Under-dash fuse/relay box connector T (20P)

Under-dash fuse/relay box connector W (24P)

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 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 result is not obtained
M6	BRN	Connect terminals M6 and D6 with a jumper wire	Check the turn signal lights operation: The left turn signal indicator should come on.	Faulty gauge control module An open or high resistance in the wire
M5	GRN	Connect terminals M5 and D6 with a jumper wire	Check the turn signal lights operation: The right turn signal indicator should come on.	Faulty gauge control module An open or high resistance in the wire
C11	BRN	Connect terminals C11 and D6 with a jumper wire	Check the turn signal lights operation: The left front turn signal light should come on.	Blown bulb Poor ground (G301) or an open in the ground wire An open or high resistance in the wire
C7	GRN	Connect terminals C7 and D6 with a jumper wire	Check the turn signal lights operation: The right front turn signal light should come on.	Blown bulb Poor ground (G301) or an open in the ground wire An open or high resistance in the wire
B4	PUR	Connect terminals B4 and D6 with a jumper wire	Check the turn signal lights operation: The left rear turn signal light should come on.	Blown bulb Poor ground (G603) or an open in the ground wire An open or high resistance in the wire
B12	GRN	Connect terminals B12 and D6 with a jumper wire	Check the turn signal lights operation: The right rear turn signal light should come on.	Blown bulb Poor ground (G604) or an open in the ground wire An open or high resistance in the wire
K11^*	BRN	Connect terminals K11 and D6 with a jumper wire	Check the turn signal lights operation: The left side turn signal light should come on.	Faulty LEDs Poor ground (G501) or an open in the ground wire An open or high resistance in the wire
K10^*	GRN	Connect terminals K10 and D6 with a jumper wire	Check the turn signal lights operation: The right side turn signal light should come on.	Faulty LED Poor ground (G503) or an open in the ground wire An open or high resistance in the wire

*: With side turn signal light

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

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
D17	RED	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. A29 (10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire
D6	YEL	Under all conditions	Measure the voltage to ground: There should be battery voltage.	Blown No. A15 (10 A) fuse in the under-hood fuse/relay box An open or high resistance in the wire
W6	BLK	In all ignition switch positions or 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
B20	BLK	In all ignition switch positions or all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G604) An open or high resistance in the ground wire
B32	BLK	In all ignition switch positions or all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G604) An open or high resistance in the ground wire
D10	BRN	In all ignition switch positions or all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G402) An open or high resistance in the ground wire
R3	GRN	Hazard warning switch pressed	Measure the voltage to ground: There should be battery voltage.	Faulty hazard warning switch An open or high resistance in the ground wire
T14 • T5	YEL • BLK	Turn signal switch in left position	Check for continuity between terminals T14 and T5: There should be less than 0.2 V.	Faulty turn signal switch An open or high resistance in the wire
T14 • T5	YEL • BLK	Turn signal switch in right or neutral position	Check for continuity between terminals T14 and T5: There should be about 5 V.	Faulty turn signal switch A short to ground in the wire
T13 • T5	LT GRN • BLK	Turn signal switch in right position	Check for continuity between terminals T13 and T5: There should be less than 0.2 V.	Faulty turn signal switch An open or high resistance in the ground wire
T13 • T5	LT GRN • BLK	Turn signal switch in left or neutral position	Check for continuity between terminals T13 and T5: There should be about 5 V.	Faulty turn signal switch A short to ground in the wire