check engine ACURA MDX 2022 Service Manual

662
Handling the Unexpected
Engine Does Not Start
Checking the Engine
If the engine does not start, check the starter.
Starter conditionChecklist
Starter doesn’t turn or turns
over slowly.
The battery may be dead. Check
each of the items on the right and
respond accordingly.Check for a message on the dr iver information interface.
●If the To start, touch start button With emblem side of remote message appears
2If the Keyless Access Remote Battery is Weak P. 663
uMake sure the keyless access remo te is in its operating range.
2ENGINE START/STOP Button Operating Range P. 166
Check the brightness of the interior lights.
Turn on the interior ligh ts and check the brightness.
●If the interior lights are dim or do not come on at all 2 Battery P. 624●If the interior lights come on normally
2 Fuses P. 677
2 Emergency Engine Start P. 664
The starter turns over normally
but the engine doesn’t start.
There may be a problem with a
fuse. Check each of the items on
the right and respond accordingly. Review the engine start procedure.
Follow its instructions, and try to start the engine again.
2
Starting the Engine P. 434
Check the immobilizer system indicator.
When the immobilizer system indicator is blinking, the engine cannot be started.
2Immobilizer System P. 157
Check the fuel level.
There should be enough fuel in the tank.
2 Fuel Gauge P. 104
Check the fuses.
Check all fuses, or have the vehicle checked by a dealer.
2Inspecting and Changing Fuses P. 683
If the problem continues:
2Emergency Towing P. 685
1Checking the Engine
If you must start the vehi cle immediately, use an
assisting vehicle or booster battery to jump start it.
2 If the Battery Is Dead P. 666
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664
uuEngine Does Not Start uEmergency Engine Start
Handling the Unexpected
Emergency Engine Start
If the engine does not start using the norm al engine starting procedure, you may be
able to start it using the emergency start procedure below.
Do not use this procedure if it is not an emergency.
1. Make sure the parking brake is applied.
u The parking brake and brake system indicator (red) comes on for 30 seconds
when you press the electric parking brake switch.
2. Check that the tra nsmission is in
(P, then set the power mode to ACCESSORY.
3. Firmly depress the brake pedal and press and hold the ENGINE START/STOP
button for at least 15 seconds.
This should be considered a system malfunction even if you are able to start the
engine using the above procedure.
Have your vehicle checked by a dealer immediately.
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666
Handling the Unexpected
If the Battery Is Dead
Turn off the power to electric devices, such as audio and lights. Turn off the engine,
then open the hood. 1.Open the cover on the positive + terminal.
2. Connect the first jump er cable to your
vehicle’s battery + terminal.
3. Connect the other end of the first jumper
cable to the booster battery + terminal.
u Use a 12-volt booster battery only.
u When using an automotive battery
charger to boost your 12-volt battery,
select a lower charging voltage than 15-
volt. Check the charger manual for the
proper setting.
4. Connect the second jumper cable to the
booster battery - terminal.
■Jump Starting Procedure1If the Battery Is Dead
Securely attach the jumper cables clips so that they
do not come off when the e ngine vibrates. Also be
careful not to tangle the ju mper cables or allow the
cable ends to touch each other while attaching or
detaching the jumper cables.
Battery performance degrades in cold conditions and
may prevent the engi ne from starting.
3WARNING
A battery can explode if you do not follow
the correct procedure, seriously injuring
anyone nearby.
Keep all sparks, open flames, and smoking
materials away from the battery.
Booster Battery
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667
uuIf the Battery Is Dead u
Handling the Unexpected
5.Connect the other end of the second
jumper cable to the ground bolt as shown.
Do not connect this jumper cable to any
other part.
6. If your vehicle is connected to another
vehicle, start the assisting vehicle’s engine
and increase its rpm slightly.
7. Attempt to start your ve hicle’s engine. If it
turns over slowly, check that the jumper
cables have good metal-to-metal contact.
Once your vehicle’s engine has started, re move the jumper cables in the following
order.
1. Disconnect the jumper cable from your vehicle’s ground.
2. Disconnect the other end of the jump er cable from the booster battery -
terminal.
3. Disconnect the jumper cable from your vehicle’s battery + terminal.
4. Disconnect the other end of the jump er cable from the booster battery +
terminal.
Have your vehicle inspected by a n earby service station or a dealer.
■What to Do After the Engine Starts
1Jump Starting Procedure
The Vehicle Stability Assist
TM (VSA ®) system, Adaptive
Cruise Control (ACC) with Low Speed Follow, safety
support, and low tire pre ssure/TPMS indicators may
come on along with a message in the driver
information interface when you set the power mode
to ON after rec onnecting a battery.
Drive a short distance at mo re than 12mph (20 km/h).
Each indicator should go off. If any do not, have your
vehicle checked by a dealer.
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669
uuOverheating uHow to Handle Overheating
Handling the Unexpected
■Next thing to do
1.Check that the cooling fan is operating and
stop the engine once the temperature
gauge goes down.
u If the cooling fan is not operating,
immediately stop the engine.
2. Once the engine has cooled down, inspect
the coolant level and check the cooling
system components for leaks.
u If the coolant level in the reserve tank is
low, add coolant until it reaches the
MAX mark.
u If there is no coolant in the reserve tank,
check that the radiator is cool. Cover the
radiator cap with a heavy cloth and open
the cap. If necessary, add coolant up to
the base of the filler neck, and put the
cap back on.
■Last thing to do
Once the engine has cooled sufficiently, re start it and check the temperature gauge.
If the temperature gauge has gone down, resu me driving. If it has not gone down,
contact a dealer for repairs.
1 How to Handle Overheating
If the coolant is leaking, contact a dealer for repairs.
Use water as an emergency/temporary measure only.
Have a dealer flush the system with proper antifreeze
as soon as possible.
3WARNING
Removing the radiator cap while the
engine is hot can cause the coolant to spray
out, seriously scalding you.
Always let the engine and radiator cool
down before removing the radiator cap.
MIN
MAX
Reserve Tank
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670
Handling the Unexpected
Indicator, Coming On/Blinking
If the Low Oil Pressure Warning Appears
■Reasons for the warning to appear
Appears when the engine oil pressure is low.
■What to do as soon as the warning
appears
1. Immediately park the vehicle on level
ground in a safe place.
2. If necessary, turn the hazard warning lights
on.
■What to do after parking the vehicle
1. Stop the engine and let it sit for
approximately three minutes.
2. Open the hood and check the oil level.
u Add oil as necessary.
2 Oil Check P. 600
3.Start the engine and check the low oil
pressure warning.
u The warning disappears: Start driving
again.
u The warning does not disappear within
10 seconds: Immediately stop the engine
and contact a dealer for repairs.
1If the Low Oil Pressure Warning Appears
NOTICE
Running the engine with low oil pressure can cause
serious mechanical damage almost immediately.
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671
uuIndicator, Comi ng On/BlinkinguIf the Charging System Indicator Comes On
Handling the Unexpected
If the Charging System Indicator Comes On
■Reasons for the indicator to come on
Comes on when there is a prob lem with the charging system.
■What to do when the indicator comes on
Stop in a safe place and have yo ur vehicle checked by a dealer
immediately.
If the Malfunction Indica tor Lamp Comes On or
Blinks
■Reasons for the indicator la mp to come on or blink
• Comes on when there is a problem with the engine emissions control
system.
• Blinks when engine misfiring is detected.
■What to do when the indicator lamp comes on
Avoid high speeds and immediately get your vehicle inspected at a
dealer.
■What to do when the indicator lamp blinks
Park the vehicle in a safe place with no flammable items and wait at least
10 minutes or more with the engine stopped until it cools.
1 If the Charging System Indicator Comes On
If you need to stop temporarily, do not turn off the
engine. Restarting the engi ne may rapidly discharge
the battery.
1 If the Malfunction Indicato r Lamp Comes On or Blinks
NOTICE
If you drive with the malf unction indicator lamp on,
the emissions control system and the engine could be
damaged.
If the malfunction indicator lamp blinks again when
restarting the engine, drive to the nearest dealer at
31 mph (50 km/h) or less. Have your vehicle
inspected.
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672
uuIndicator, Coming On/Blinking uIf the Brake System Indicator (Red) Comes On or Blinks
Handling the Unexpected
If the Brake System Indicator (Red) Comes On or
Blinks
■Reasons for the indicator to come on
• The brake fluid is low.
• There is a malfunction in the brake system.
■What to do when the indicator comes on while driving
Depress the brake pedal lightly to check pedal pressure.
• If normal, check the brake fluid level the next time you stop.
• If abnormal, take immediate action . If necessary, downshift the
transmission to slow the vehicle using engine braking.
■Reasons for the in dicator to blink
• There is a problem with the electric parking brake system.
■What to do when the indicator blinks
• Avoid using the parking brake and ha ve your vehicle checked by a
dealer immediately.
1 If the Brake System Indicator (Red) Comes On or Blinks
Have your vehicle re paired immediately.
It is dangerous to drive with low brake fluid. If there
is no resistance from the brake pedal, stop
immediately in a safe plac e. If necessary, downshift
the gears.
If the brake system indicator (red) and ABS indicator
come on simultaneously , the electronic brake
distribution system is not wo rking. This can result in
vehicle instability under sudden braking.
Have your vehicle inspecte d by a dealer immediately.
If the brake system indicator (red) blinks at the same
time when the brake system indicator (amber) comes
on, the parking br ake may not work.
Avoid using the parking brak e and have your vehicle
checked by a dealer immediately.
2 If the Brake System Indicator (Red) Comes
On or Blinks at the Same Time When the
Brake System Indicator (Amber) Comes On
P. 673
U.S.
Canada
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676
uuIndicator, Coming On/Blinking uIf the Transmission System Indicator Blinks along with the Warning Message
Handling the Unexpected
If the Transmission System Indicator Blinks along
with the Warning Message
■Reasons for the indicator to blink
The transmission is malfunctioning.
■What to do when the indicator blinks
• Immediately have your vehicle inspected by
a dealer.
• Select
(N after starting the engine.
u Check if the
(N position in the
instrument panel and the indicator on
the
(N button light/blink.
u The engine cannot be turned on unless
the parking brake is set.
2 Starting the Engine P. 434
1If the Transmission System In dicator Blinks along with the
Warning Message
You may not be able to start the engine.
Make sure to set the pa rking brake when parking
your vehicle.
Call a professional towing service if you need to tow
your vehicle. 2 Emergency Towing P. 685
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677Continued
Handling the Unexpected
Fuses
Fuse Locations
If any electrical devices are not working, set
the power mode to VEHICLE OFF (LOCK)
and check to see if any applicable fuse is
blown.
Fuse locations are shown on the fuse box
cover. Locate the fuse in question by the
fuse number and box cover number.
Located near the brake fluid reservoir. Push
the tabs to open the box.
Replacement of fuses No.1-5 should be
done by a dealer.
■Engine Compartment Fuse
Box
Tab
■Circuit protected and fuse rating
Circuit ProtectedAmps
1Battery225 A
2
Idle Stop 130 A
Idle Stop 230 A
EPS80 A
Power Module 170 A
Fuse Box Main 160 A
Fuse Box Option 160 A
Rear Blower30 A
3
Active Control Mount30 A
Starter Motor30 A
Radiator Fan30 A
Heater Motor40 A
Power Module ACC40 A
Rear Defogger40 A
Fuse Box Option 260 A
4
AC Power Outlet*(30 A)
Brake Booster40 A
Rear Fuse Box Main 260 A
VSA F/S RLY40 A
Rear Fuse Box Main 160 A
−60 A
Fuse Box Main 260 A
Circuit ProtectedAmps
5
Power Module 230 A
VSA Pump Motor40 A
IG Main 230 A
Relay Module 230 A
Relay Module 130 A
−30 A
IG Main 130 A
6 Conditioner Fan 30 A
7Wiper30 A
8− −
9FI Main15 A
10 − −
11Injector20 A
12 − −
13Trailer E-Brake*(20 A)
14 Horn 15 A
15−−
16 FI-ECU 10 A
17−−
18 DBW 15 A
19Audio15 A
20Back Up7.5 A
* Not available on all models
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