SECTION 6 ± 4
SERVICE PROCEDURES AND
SPECIFICATIONS
Electrical components
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
404
Checking battery condition . . . . . . . . . . . . . . . . . . . . . . . . . . .
413
Battery recharging precautions . . . . . . . . . . . . . . . . . . . . . . . .
419
Checking and replacing the blade type fuses . . . . . . . . . . . . .
420
Checking the cartridge type fuses . . . . . . . . . . . . . . . . . . . . . .
426
Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
428
Checking the headlight aim . . . . . . . . . . . . . . . . . . . . . . . . . .
428
Replacing light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
431
403
ELECTRICAL COMPONENTS
SPECIFICATIONS
± FUSE LOCATION
1 Engine compartment |
± FUSES |
2Passenger's side kick panel
3Driver's side kick panel
4Engine compartment (Canada only)
404
ELECTRICAL COMPONENTS
Driver's side kick panel
Passenger's side kick panel
405
ELECTRICAL COMPONENTS
Engine compartment
406
ELECTRICAL COMPONENTS
Engine compartment (Canada only)
407
ELECTRICAL COMPONENTS
No. |
FUSE |
AMPERE |
CIRCUIT |
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1 |
WASHER |
20 |
Windshield washer |
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2 |
FR FOG |
15 |
Fog lights |
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TAIL |
10 |
Tail lights, Side marker lights, |
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3 |
License plate lights, |
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Parking lights |
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4 |
SRS±ACC |
15 |
SRS |
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GAUGE |
10 |
Back±up lights, Gauges and |
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5 |
meters, service reminder indicators |
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and buzzers |
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6 |
FUEL OPN |
10 |
Fuel filler door opener |
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D FR |
20 |
Power window system, |
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7 |
Door lock system, |
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DOOR |
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Wireless remote control |
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8 |
PANEL |
7.5 |
Emergency flashers, |
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Headlight cleaner |
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9 |
HEATER |
10 |
Air conditioning |
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SRS±B |
5 |
Gauges and meters, service |
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10 |
reminder indicators and warning |
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buzzers |
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11 |
D P/SEAT |
30 |
Power seat system |
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12 |
RADIO |
15 |
Audio, Shift lock system |
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NO.2 |
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13 |
WIPER |
25 |
Windshield wipers |
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14 |
OBD |
7.5 |
On±board diagnosis |
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408
ELECTRICAL COMPONENTS
No. |
FUSE |
AMPERE |
CIRCUIT |
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STOP |
15 |
Stop lights, |
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15 |
Anti±lock brake system, Traction |
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control system |
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16 |
CIG |
15 |
Cigarette lighter, Power outlet |
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ECU±IG |
15 |
Power window, Door lock system, |
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17 |
Wireless remote control, Theft |
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deterrent system |
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18 |
STARTER |
5 |
Starting system |
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Multiport fuel injection |
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system/sequential multiport fuel |
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19 |
IGN |
5 |
injection system, SRS, Anti±lock |
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brake system, |
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Vehicle skid control system, Cruise |
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control system |
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D RR |
20 |
Power window system, |
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20 |
Door lock system, |
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DOOR |
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Wireless remote control |
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21 |
RR FOG |
10 |
No circuit |
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22 |
M/R HTR |
10 |
Outside rear view mirror |
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23 |
S/ROOF |
25 |
Electronic moon roof |
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P FR |
20 |
Power window system, |
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24 |
Door lock system, |
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DOOR |
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Wireless remote control |
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25 |
P P/SEAT |
30 |
Power seat system, |
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Tilt and telescopic steering |
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409
ELECTRICAL COMPONENTS
26 |
DOME |
10 |
Interior lights, Personal lights, |
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Vanity lights, Trunk light, Clock |
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27 |
SEAT HTR |
20 |
Seat heater |
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No. |
FUSE |
AMPERE |
CIRCUIT |
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28 |
4WS |
25 |
No circuit |
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29 |
TV |
15 |
No circuit |
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30 |
ECU±B2 |
5 |
Power seat system |
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P RR |
20 |
Power window system, |
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31 |
Door lock system, |
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DDOR |
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Wireless remote control |
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Power window system, |
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Door lock system, |
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32 |
ECU±B1 |
20 |
Wireless remote control, |
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Theft deterrent system, Trunk lid |
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opener, Interior lights, Personal |
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lights, Clock, Headlight cleaner |
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Power window system, |
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MPX±B |
10 |
Door lock system, |
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33 |
Wireless remote control, |
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Theft deterrent system, |
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Trunk lid opener |
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34 |
HORN |
10 |
Horn |
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35 |
ETCS |
15 |
Electronic throttle control system |
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AM2 |
15 |
Starting system, Multiport fuel |
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36 |
injection system/sequential |
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multiport fuel injection system |
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37 |
TEL |
15 |
No circuit |
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410
ELECTRICAL COMPONENTS
38 |
TURN±HA |
10 |
Turn signal lights |
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Z |
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No. |
FUSE |
AMPERE |
CIRCUIT |
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Multiport fuel injection |
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39 |
EFI |
25 |
system/sequential multiport fuel |
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injection system, Emission control |
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system |
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40 |
ALT±S |
5 |
Charging system |
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41 |
RADIO |
20 |
Audio |
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NO.1 |
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42 |
DRL NO.2 |
30 |
Vehicles sold in Canada: |
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Daytime running light system |
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43 |
H±LP L |
10 |
Vehicles sold in U.S.A.: |
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UPR |
Left±hand headlight (high beam) |
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H±LP R |
10 |
Vehicles sold in U.S.A.: |
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UPR |
Right±hand headlight (high beam) |
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44 |
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DRL NO.1 |
30 |
Vehicles sold in Canada: |
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Daytime running light system |
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45 |
H±LP L |
15 |
Left±hand headlight (low beam) |
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LWR |
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46 |
H±LP R |
15 |
Right±hand headlight (low beam) |
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LWR |
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47 |
H±LP R |
15 |
Vehicles sold in Canada: |
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UPR |
Right±hand headlight (high beam) |
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411
ELECTRICAL COMPONENTS
48 |
H±LP L |
15 |
Vehicles sold in Canada: |
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UPR |
Right±hand headlight (high beam) |
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SPARE |
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Spare fuse |
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412
ELECTRICAL COMPONENTS
CHECKING BATTERY
CONDITION
Precautions
CAUTION
BATTERY PRECAUTIONS
The battery produces flammable and explosive hydrogen gas.
Do not cause a spark by contacting the battery terminals with tools.
Do not smoke or light a match near the battery.
The electrolyte contains poisonous and corrosive sulfuric acid.
Avoid contact with eyes, skin or clothes.
Never inhale or swallow electrolyte.
Wear protective safety glasses when working near the battery.
Keep children away from the battery.
EMERGENCY MEASURES
If electrolyte gets in your eyes, flush your eyes with clean water for at least 15 minutes and get immediate medical attention. If possible, continue to apply water with a sponge or cloth while traveling to the medical office.
413
ELECTRICAL COMPONENTS
If electrolyte gets on your skin, thoroughly wash the contacted area. If you feel a pain or burn, get medical attention immediately.
If electrolyte gets on your clothes, there is a possibility of its soaking through to your skin, so immediately take off the exposed clothing and follow the procedure above, if necessary.
If you happen to swallow electrolyte, drink a large quantity of water or milk. Follow with milk of magnesia, beaten raw egg or vegetable oil. Then go immediately for emergency help.
Checking battery exterior
414
ELECTRICAL COMPONENTS
1 Terminals 2 Hold±down clamp
Check the battery for corroded or loose connections, cracks, or loose hold±down clamps.
1.If the battery is corroded, wash it off with a solution of warm water and baking soda. Coat the terminals with grease to prevent further corrosion.
2.If the connections are loose, tighten the clamp bolts ± but do not overtighten.
3.Tighten the hold±down clamp only enough to keep the battery firmly in place. Overtightening may damage the battery case.
NOTICE
Make sure the engine and all accessories are turned off before performing maintenance.
When checking the battery, remove the ground cable first and reinstall it last.
Be careful not to cause a short circuit with tools.
Take care no solution gets into the battery when washing it.
Checking battery fluid
There are 2 types of batteries: maintenance type and non±maintenance type.
A non±maintenance battery has ºMAINTENANCE FREE BATTERYº on its top. A maintenance type battery does not have such indication.
Maintenance type battery
Check the fluid condition by the fluid level lines on the side of the battery. Or if the battery has a hydrometer on its top, you can also check the hydrometer.
Non±maintenance battery
Check the battery condition by the hydrometer on the top of the battery.
415
ELECTRICAL COMPONENTS
(a) Checking by the fluid level lines (Maintenance type battery only)
1 Upper line 2 Lower line |
(b) Checking by the hydrometer |
The fluid (electrolyte) level must be between the upper and lower lines.
When checking the fluid level, look at all six cells, not just one or two.
If the level is lower than the lower line, add distilled water. (See ºAdding distilled waterº on page 418.)
416
ELECTRICAL COMPONENTS
Check the battery condition by the hydrometer color. Maintenance type battery
1BLUE ± Good condition.
2WHITE ± Charging necessary. Have the battery checked by your Lexus dealer.
3RED ± Add distilled water. (See ºAdding distilled waterº on page 418.)
NOTICE
For non±maintenance battery:
Do not refill the battery with water.
Non±maintenance type battery
1BLUE ± Good condition.
2WHITE ± Charging necessary. Have the battery checked by your Lexus dealer.
3RED ± Have the battery checked by your Lexus dealer.
417
ELECTRICAL COMPONENTS
Adding distilled water (Maintenance type battery only)
1 Low 2 O.K.
1. Remove the vent plugs.
2. Add distilled water to cells needing fluid.
If the side of your battery is covered, check the water level by looking down directly above the cell as illustrated above.
3. Retighten the vent plugs securely.
NOTICE
Do not overfill the cells. Excess electrolyte could squirt out of the battery during heavy charging, causing corrosion or damage.
Use a cover on the battery for longer life.
418
ELECTRICAL COMPONENTS
BATTERY RECHARGING
PRECAUTIONS
During recharging, the battery is producing hydrogen gas.
Therefore, before recharging:
1.Maintenance type batteries ± Remove the vent plugs.
2.If recharging with the battery installed on the vehicle, be sure to disconnect the ground cable.
3.Make sure the power switch on the recharger is off when connecting the charger cables to the battery and when disconnecting them.
CAUTION
Always charge the battery in an unconfined area. Do not charge the battery in a garage or closed room where there is not sufficient ventilation.
Non±maintenance batteries: Only do a slow charge (5 A or less). Charging at a quicker rate is dangerous. The battery may explode causing personal injuries.
Maintenance type batteries: Be sure to remove the vent plugs before recharging.
419
ELECTRICAL COMPONENTS
NOTICE
Never recharge the battery while the engine is running. Also, be sure all accessories are turned off.
CHECKING AND REPLACING THE BLADE TYPE FUSES
420
ELECTRICAL COMPONENTS
Driver's side kick panel
Passenger's side kick panel
421
ELECTRICAL COMPONENTS
Engine compartment 1 Spare fuses 2 Pull±out tool
Engine compartment (Canada only)
1. Turn the ignition switch off and open the fuse box lid.
Determine which fuse may be causing the problem. The lid of the fuse box shows the name of the circuit for each fuse.
422
ELECTRICAL COMPONENTS
2. Make sure the inoperative component is turned off. Pull the suspected fuse straight out with the pull±out tool and check it. If it has blown, push a new fuse into the clips.
423
ELECTRICAL COMPONENTS
Good |
Blown |
a.Look carefully at the fuse. If the thin wire is broken, the fuse has blown. If you are not sure or if it is too dark to see, try replacing the suspected fuse with one of the same value that you know is good.
b.Install only a fuse with the amperage rating designated on the fuse box lid.
If you do not have a spare fuse, in an emergency you can pull out the ºCIGº, ºRAD NO.1º or ºOBDº fuse, which may be dispensable for normal driving, and use it if its amperage rating is the same.
If you cannot use one of the same amperage, use one lower than, but as close as possible to, the amperage. If the amperage is lower than that specified, the fuse might blow out again but this does not indicate anything wrong. Be sure to get the correct fuse as soon as possible and return the substitute to its original clips.
424
It is a good idea to purchase a set of spare fuses and keep them in your vehicle for emergencies.
If the new fuse immediately blows out, there is a problem with the electrical system. Have your Lexus dealer correct it as soon as possible.
ELECTRICAL COMPONENTS
CAUTION
Never use a fuse with a higher amperage rating, or any other object, in place of a fuse. This may cause extensive damage and possibly a fire.
425
ELECTRICAL COMPONENTS
CHECKING THE CARTRIDGE
TYPE FUSES
1 Good 2 Melted
If the headlights or other electrical components do not work and the blade type fuses are O.K., check the cartridge type fuses. If any of the cartridge type fuses are blown, they must be replaced.
If there is an overload in the circuits from the battery, the fuses are designed to blow before the entire wiring harness is damaged.
NOTICE
Before replacing the fuses, have the cause of electrical overload determined and repaired by your Lexus dealer.
426
ELECTRICAL COMPONENTS
CAUTION
Always use a genuine Lexus fuse or equivalent for replacement. Never install an ordinary wire ± even for a temporary fix. This may cause extensive damage and possibly a fire.
427
ELECTRICAL COMPONENTS
ADDING WASHER FLUID
If the washer tank becomes nearly empty, add washer fluid.
You may use plain water as washer fluid. However, in cold areas where temperatures range below the freezing point, use washer fluid containing antifreeze. This product is available at your Lexus dealer and most auto parts stores. Follow the manufacturer's directions for how much to mix with water.
CHECKING THE HEADLIGHT
AIM
NOTICE
Do not use engine antifreeze or any other substitute because it may damage your vehicle's paint.
428
ELECTRICAL COMPONENTS
1 Beam angle gauge (vertical movement)
2 Beam angle gauge (horizontal movement)
Before checking the headlight aim:
1.Be sure that the body around the headlight is not deformed.
2.Park the vehicle on a level spot.
3.The driver gets into the driver's seat and puts the vehicle in a state readying for a driving (with a full tank).
4.Bounce the vehicle several times.
429
ELECTRICAL COMPONENTS
1 Bubble 2 Acceptable range
Vertical movement gauge: The bubble of the gauge should not deviate from the center of the gauge by more than 2 marks to either side of the gauge.
430
ELECTRICAL COMPONENTS
1 Mark 2 Acceptable range
Horizontal movement gauge: The mark should not deviate by more than one mark to either side of the gauge.
If the error is over the value specified above, take the vehicle to your Lexus dealer to adjust the headlight aim.
REPLACING LIGHT BULBS
The illustration on the following pages show the locations of light bulbs. If it is necessary to replace a bulb, take your vehicle to your Lexus dealer as soon as possible. Use bulbs with the bulb numbers and wattage ratings given in the table.
431
ELECTRICAL COMPONENTS
CAUTION
Do not disassemble, repair or take apart the low beam headlight bulbs, connector, power supply circuits and rotated components. Or you may be injured by electric shocks. Call your dealer when the headlights fail to work or have to be replaced or disposed of.
Halogen bulbs have pressurized gas inside and require special handling. They can burst or shatter if scratched or dropped. Hold a bulb only by its plastic or metal case. Do not touch the glass part of a bulb with bare hands.
LIGHT LOCATION
NOTICE
Only use a bulb of the listed type.
432