Parasitic Draw Check - Honda CR-V RW/RT 2017-2020

1.

Parasitic draw check 1:

Parasitic draw check 1

?1.	Make sure the 12 volt battery is fully charged, and that all the vehicle's electrical accessories are turned off.

?2.	With hood latch switch: Order to recognize that the hood is closed, disconnect the hood latch switch 2P connector then connect the hood latch switch 2P connector terminals No. 1 and No. 2 with a jumper wire.

?3.	Turn the vehicle to the ON mode.

?4.	Turn the vehicle to the OFF (LOCK) mode.

?5.	Get out of the vehicle, and close all doors and tailgate securely.

?6.	Lock the doors with the keyless remote/transmitter.

?7.	Make sure the individual map lights are turned off, and the security alarm system is armed (with security).

?8.	Wait for at least 20 minutes.

?9.

Attach the LH41 AC/DC low current clamp meter (A) to the 12 volt battery ground cable (B). Follow the equipment manufacturer's instructions, then measure the parasitic draw.
NOTE: If you are using a digital multimeter: go to step 2.

12 volt battery size	Threshold of the parasitic draw
55B24, L2	27.0 mA

Is the measured valued less than the threshold?


	YES

Intermittent failure, the system is normal at this time.?


	NO

Go to step 3.

2.

Parasitic draw check 2:

Parasitic draw check 2

?1.

Check the following items before measuring:

	Set the multimeter dial to the DCA (direct current amps) range.
	Plug the red test probe into the red A (Amps) jack, and plug the black test probe into the COM jack.
	To avoid blowing an input fuse, start by setting the range above 10 A.

?2.	Loosen the nut (A) on the 12 volt battery negative terminal. NOTE: Follow the instructions exactly to avoid disconnecting the 12 volt battery ground cable terminal from the 12 volt battery negative terminal.

?3.	Connect the red (?) test lead (B) to the 12 volt battery ground cable terminal (C).

?4.	Carefully slide the 12 volt battery ground cable terminal upwards from the 12 volt battery negative terminal post to maintain contact and avoid disconnection. Then connect the black (?) test lead (D) to the 12 volt battery negative terminal post.

?5.	Disconnect the 12 volt battery ground cable terminal (A) from the 12 volt battery negative terminal.

?6.

Measure the parasitic draw.

NOTE: If the measured value is over the threshold, wait 10 minutes and recheck.

12 volt battery size	Threshold of the parasitic draw
55B24, L2	27.0 mA

Is the measured valued less than the threshold?


	YES

Intermittent failure, the system is normal at this time.?


	NO

Go to step 3.

3.

Electrical equipment check:

Electrical equipment check

?1.	Check if there are any aftermarket electrical accessories installed on the vehicle.

Are there any aftermarket electrical accessories installed?


	YES

Remove any installed aftermarket accessories and do parasitic draw tests again.?


	NO

Go to step 4.

4.

Parasitic draw check 3:

Parasitic draw check 3

?1.

Remove the BACK UP fuse while the test leads are connected, and measure the parasitic draw.

12 volt battery size	Threshold of the parasitic draw
55B24, L2	14.0 mA

Is the measured valued less than the threshold?


	YES

Go to step 5.


	NO

Go to step 6.

5.

Parasitic draw check 4:

Parasitic draw check 4

?1.	Install the BACK UP fuse.

?2.	Short the B-CAN_H line to B-CAN_L line with a jumper wire while the test leads are connected.

?3.	Turn the vehicle to the ON mode and then the OFF (LOCK) mode.

?4.	Get out of the vehicle, and close all doors and tailgate securely.

?5.	Wait for at least 40 seconds.

?6.

Measure the parasitic draw.

12 volt battery size	Threshold of the parasitic draw
55B24, L2	27.0 mA

Is the measured valued less than the threshold?


	YES

Disconnect the control units from the B-CAN circuit one at a time, perform step 3?6 above, then measure the parasitic draw. Do the input test for the control unit that reduced the parasitic draw to less than the threshold when disconnected.?


	NO

Disconnect the control units from the back-up fuse circuit one at a time, perform step 3?6 above, then measure the parasitic draw. Replace the control unit that reduced the parasitic draw to less than the threshold when disconnected.?

6.

Parasitic draw check 4:

Parasitic draw check 4

?1.	Remove the IG MAIN 1 fuse and IG MAIN 2 fuse (with keyless access system) while the test leads are connected.

?2.	Turn the vehicle to the ON mode and then the OFF (LOCK) mode.

?3.	Get out of the vehicle, and close all doors and tailgate securely.

?4.	Wait for at least 40 seconds.

?5.

Measure the parasitic draw.

12 volt battery size	Threshold of the parasitic draw
55B24, L2	27.0 mA

Is the measured valued less than the threshold?


	YES: With keyless access system

Go to step 7.


	YES: Without keyless access system

Go to step 8.


	NO

Remove the fuse(s) one at a time, and identify the parts which excessively consume current.?


	NO

If all electrical circuits are OK, check the starter system circuit.?


	NO

Perform the starter performance test.?

7.

Parasitic draw check 5 (with keyless access system):

Parasitic draw check 5 (with keyless access system)

?1.	Install the IG MAIN 1 and IG MAIN 2 fuses.

?2.

Disconnect under-dash fuse/relay box connector C (27P) while the test leads are connected, and measure the parasitic draw.

12 volt battery size	Threshold of the parasitic draw
55B24, L2	27.0 mA

Is the measured valued less than the threshold?


	YES

Replace the under-dash fuse/relay box.?


	NO

Repair a short to ground in the ?B IG MAIN wire.?


	NO

Repair a short to ground in the ?B IG MAIN2 wire.?

8.

Parasitic draw check 5 (without keyless access system):

Parasitic draw check 5 (without keyless access system)

?1.	Install the IG MAIN 1 fuse.

?2.

Disconnect the ignition switch 7P connector while the test leads are connected, and measure the parasitic draw.

12 volt battery size	Threshold of the parasitic draw
55B24, L2	27.0 mA

Is the measured valued less than the threshold?


	YES

Replace the ignition switch.?


	NO

Repair a short to ground in the wire.?