Special Tools Required
LH41 AC/DC low current clamp meter, FLULH41A*
*: Available through the Honda Tool and Equipment Program, 888-424-6857
Scheme 2
Scheme 3
Scheme 4
Scheme 5
Scheme 6
- Make sure the battery is fully charged, and that all the vehicle's electrical accessories are turned off. With security, go to step 2. Without security, go to step 4 .
- Open the hood.
- Disconnect the security hood switch 2P connector to allow the security system to arm itself with the hood open.
- Turn the ignition switch to ON (II).
- Turn the ignition switch to LOCK (0), and remove the ignition key from the ignition switch.
- Get out of the vehicle, and close all the doors.
- Lock the doors with the keyless transmitter.
- Make sure the map lights and the ceiling lights are turned off and the security alarm system is armed by confirming that the security indicator is flashing.
- Wait at least 20 minutes.
- Attach the LH41 AC/DC low current clamp meter (A) to the 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 12 . Is the parasitic draw 52 mA or less? YES -Go to step 18 . NO -Go to step 11.
- Check for poor connections and loose terminals at the battery and the alternator terminals. Are the connections OK? YES -Do the alternator and regulator circuit troubleshooting (see «ALTERNATOR AND REGULATOR CIRCUIT TROUBLESHOOTING»(ref-336465-S13810557742009072700000) ), and alternator control circuit troubleshooting (see «ALTERNATOR CONTROL CIRCUIT TROUBLESHOOTING»(ref-336465-S07959996752009072700000) ), then recheck. If the system is OK, the battery is flat from self-discharge. Check the battery (see «Battery Test»(ref-336470-S13772772962009072700000) ), then recharge or replace the battery. NO -Reconnect the terminals, then recheck.
- Check the following items before measuring: The multimeter dial is set to the DCA (direct current amps) range. The red test probe is plugged into the red A (Amps) jack, and the black test probe is plugged into the COM jack. To avoid blowing an input fuse, start by setting the range above 10 A.
- Loosen the nut (A) on the battery negative terminal. NOTE: Follow the instructions exactly to avoid disconnecting the battery ground cable terminal from the battery negative terminal.
- Connect the red (+) test lead (A) to the negative terminal (B) of the battery ground cable.
- Carefully slide the negative terminal of the battery ground cable upwards from the battery negative terminal post to maintain contact and avoid disconnection. Then connect the black (-) test lead (C) to the battery negative terminal post.
- Disconnect the negative terminal (A) of the battery ground cable from the battery negative terminal.
- Measure the parasitic draw. Is the parasitic draw 52 mA or less? YES -The system is normal at this time. NO -Go to step 18.
- Check if there are any aftermarket electrical accessories installed on the vehicle. Are there any aftermarket electrical accessories installed? YES -Go to step 19. NO -Go to step 21 .
- Make sure that the aftermarket electrical accessories have been properly installed. Are the aftermarket electrical accessories installed correctly? YES -Go to step 20. NO -Repair, reinstall, or remove the aftermarket accessories, then recheck.
- Disconnect the aftermarket electrical accessories one at a time, then measure the parasitic draw. Turn the ignition switch to ON (II), and then back to LOCK (0). Get out of the vehicle and close all doors. Wait at least 40 seconds. Measure the parasitic draw. Is the parasitic draw 52 mA or less? YES -Replace or repair the aftermarket electrical accessory that reduced the parasitic draw to 52 mA or less when disconnected. NO -Got to step 21.
- Remove the No. 7 (7.5 A) fuse from the under-dash fuse/relay box, then measure the parasitic draw. Is the parasitic draw 34.5 mA or less? YES -Go to step 22. NO -Got to step 24 .
- Connect combination switch control unit 12P connector terminal No. 3 and body ground with a jumper wire.
- Install the No. 7 (7.5 A) fuse to the under-dash fuse/relay box, then measure the parasitic draw. Turn the ignition switch to ON (II), and then back to LOCK (0). Get out of the vehicle and close all doors. Wait at least 40 seconds. Measure the parasitic draw. Is the parasitic draw 52 mA or less? YES -Disconnect the control units from the B-CAN circuit one at a time, perform steps 1-4 above, then measure the parasitic draw. Do the input test for the control unit that reduced the parasitic draw to 52 mA or less when disconnected. NO -Disconnect the control units from the No. 7 (7.5 A) fuse circuit one at a time, perform steps 1-4 above, then measure the parasitic draw. Replace the control unit that reduced the parasitic draw to 52 mA or less when disconnected.
- Remove the No. 23 (IG) (60 A) fuse from the under-hood fuse/relay box, then measure the parasitic draw. Turn the ignition switch to ON (II), and then back to LOCK (0). Get out of the vehicle and close all doors. Wait at least 40 seconds. Measure the parasitic draw. Is the parasitic draw 52 mA or less? YES -Go to step 25. NO -Remove the fuses from the fuse box one at a time, perform steps 1-4 above then, measure the parasitic draw in order to isolate the circuit which contains the fault. If all circuits are OK, check the starter circuits and do the starter performance test (see «STARTER PERFORMANCE TEST»(ref-336469-S22592927442009072700000) ).
- Install the No. 23 (IG) (60 A) fuse in the under-hood fuse/relay box.
- Disconnect the ignition switch 6P connector, then measure the parasitic draw. Is the parasitic draw 52 mA or less? YES -Replace the ignition switch (see «IGNITION SWITCH REPLACEMENT»(ref-336472-S42251184142009072700000) ). NO -Repair a short to ground in the wire between the No. 23 (IG) (60 A) fuse in the under-hood fuse/relay box and power control unit.
Note. A battery might be discharged under these conditions: Driving a vehicle 6 miles (10 km) or less per day. Leaving a vehicle parked without removing the ignition key from the ignition switch. Leaving the vehicle idling with high electrical loads on, such as headlights, seat heaters, wipers, heated windshield wiper area, etc. Parking the vehicle with the hood unlatched prevents the security system from arming, which causes excessive parasitic draw.
- Check the battery (see «Battery Test»(ref-336470-S13772772962009072700000) ). Recharge or replace the battery (see «Battery Removal and Installation»(ref-336470-S23753401092009072700000) ) if necessary.
- Start the engine, and check the charging system indicator. Does the charging system indicator go off with the engine running? YES -Go to step 4 . NO -Go to step 3.
- Check for PGM-FI DTCs. Are DTCs P0562, P1549, P16BB, and/or P16BC indicated? YES -Go to the indicated DTCs troubleshooting. NO -Do the drive belt inspection (see «DRIVE BELT INSPECTION»(ref-336465-S30666249062009072700000) ), drive belt auto-tensioner inspection (see «DRIVE BELT AUTO-TENSIONER INSPECTION»(ref-336465-S16764613592009072700000) ), and alternator and regulator circuit troubleshooting (see «ALTERNATOR AND REGULATOR CIRCUIT TROUBLESHOOTING»(ref-336465-S13810557742009072700000) ).
- Check the following items: The hazard warning switch is off. The front individual map light and the interior light switches are off. All of the doors, hood, and in-bed trunk lid are closed. The brake pedal is not pressed.
- Lock the doors with the keyless transmitter LOCK button. Make sure the security alarm system arms by confirming that the security indicator is flashing slowly, about once every 3 seconds. Is the security alarm system armed? YES -Go to step 6. NO -Go to the symptom troubleshooting for the security alarm system.
- Check the following items with the ignition key removed from the ignition switch: The brake lights are off when the brake pedal is not pressed. The courtesy lights are off with all doors closed. The radiator and condenser fans are not running. The audio unit (including navigation) is off. There is no operating sound from the VSA modulator-control unit. The heated windshield wiper area and the power mirror defoggers are off. Are all of the check items OK? YES -Check the parasitic draw (see «Parasitic Draw Check»(ref-336470-S08844723842012020600000) ). NO -Troubleshoot and repair the affected circuits.