Question about 2003 Acura RSX

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Check engine light on a 2002 Acura RSX

Hello,

I have a 02 Acura RSX and I put on a really nice air intake about 6 months ago. Well, about 3-4 weeks after putting it on my check engine light came on and has yet to turn off. I took my car to Autozone and they hooked it up to check and see what was wrong with it. Come to find out it's a code saying I am taking in to much air and it's making my light come on.. that's the idea for a aftermarket air intake is to "take in more air".. So I ask the guy what can I do, he tells me to buy a new sensor and see if that works. 50 bucks later light is still on. I get mad and take my car to Acura and they say we can fix it for 500 bucks or you can just put stock air intake back on.. there has to be a way around this.. can you guys tell me how to turn the light off with out me having to drop 500 bucks or taking my air intake off?... thanks

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  • Roberta Smith
    Roberta Smith May 11, 2010

    if the engine runs ok put a piece of tape over the light

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Just hit the reset button, i have a 03 Civic Si same motor as base RSX mine came on everytime when i kept disconnecting the plug, never came back on. (i have a short ram intake)

Posted on Jul 30, 2009

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Call or go to a dealer, and tell them what kind of an air intake you put on, and if the computor has to be reprogramed for the extra air it is getting for that type of car. Hope this helps.

Posted on Jan 31, 2009

  • bizusat Sep 17, 2010

    Special Tools Required
    -Pressure Gauge Adaptor 07NAJ-P07010A
    -A/T Low Pressure Gauge w/panel 07406-0070300
    -A/T Pressure Hose 07406-0020201
    -A/T Pressure Hose 2,210 mm 07MAJ-PY4011A
    -A/T Pressure Adaptor 07MAJ-PY40120
    -Oil Pressure Hose 07ZAJ-S5AA200

    Step 1) Reset the ECM/PCM

    to do this you need to pull a fuse under the hood. Its the No. 6 ECU 15A

    pull this fuse for 15 seconds and then reinsert it

    Step 2) Check the oil level, and refill is necessary

    Step 3) Start the engine, put the car in park if you have an auto, neutral if you have a 5-speed. Hold the RPM's at 3000 RPM until the radiator fan comes on, don't turn off the car just yet.

    Step 4) Time to go for a drive, accerlate in first gear to an engine speed over 4000 rpm. Hold the engine speed for at least 2 seconds. If DTC P1259 is not repeated during the first test drive the try this test 2 more times.

    Is DTC P1259 indicated?

    YES - Go to Step 5
    NO - Intermittent failure, system is OK at this time, Check for poor connections or loose terminals at the VTEC solenoid valve, at the VTEC pressure switch, and the ECM/PCM

    Step 5) Turn the ignition off

    Step 6) Remove the resonator, basically your stock intake is 3 parts, the part right above the throttle body, we'll call this piece A. The middle part that runs from piece A and that extension pipe over by the battery. This middle piece is the piece you want to remove.

    Note, im guessing that if you have an aftermarket intake your going to need to put your stock intake back on.

    Step 7) Disconnect the VTEC oil pressure switch 2p connector

    The rest of the steps will follow shortly
    YES - Go to Step 9
    NO - Replace the VTEC oil pressure switch

    Step 9) Turn the ignition switch to ON (II)

    Step 10) Measure the voltage between VTEC oil pressure seitch 2p connector 1 and body ground.



    Is there battary voltage

    YES - Go to Step 15
    NO - Got to Step 11

    Step 11) Measure the voltage between the ECM/PCM terminal B9 and body ground



    Is there battery voltage?

    YES - Repair the open wire between the VTEC oil pressure switch and the ECM/PCM (B9)
    NO - Go to Step 12

    Step 12) Turn the ignition switch off (II)

    Step 13) Disconnect the ECM/PCM connector B (24P)

    Step 14) Check the continuity between ECM/PCM connector terminal B9 and body ground.



    Is there continuity?

    YES - Repair the short in the wire between the VTEC oil pressure switch and the ECM/PCM (B9)
    NO - Update the ECM/PCM software if it does not have the latest software, or substitute a known-good ECM/PCM, the recheck. If the symptom/indication goes away with a known-good ECM/PCM, then replace the orginal ECM/PCM.
    s there battery voltage?

    YES - Go to Step 16
    NO - Repair open wire between the VTEC oil pressure switch and G101.

    Step 16) Turn the ignition switch off (II)

    Step 17) Disconnect the VTEC soleniod valve 1p connector

    Step 18) Check the resistance between VTEC soleniod valve 1p connector and body ground



    Is there 14-30 ohms?

    YES - Go to Step 19
    NO - Replace VTEC solenoid valve

    Step 19) Remove the VTEC oil pressure switch (A), and install the special tools as shown, then reinstall the VTEC oil pressure switch



    Step 20) Reconnect the VTEC solenoid valve 1p connector and the VTEC oil pressure switch 2p

    Step 21) Connect a tachometer

    Step 22) Start the engine, put the car in park if you have an auto, neutral if you have a 5-speed. Hold the RPM's at 3000 RPM until the radiator fan comes on, don't turn off the car

    Step 23) Check the oil pressure at engine speeds of 1,000, 2,000, and 4,000 rpm. Keep the measuring time as short as possible (less than 1 minute) because the engine is running with no load

    [i]Is the oil pressure below 49 kPa (.0 kgf/cm^2, 7 psi)?

    YES - Go to Step 24
    NO - Inspect the VTEC solenoid valve
    tep 24) Turn the ignition switch off

    Step 25) Disconnect the VTEC solenoid valve 1p connector

    Step 26) Attach the battery positive terminal to the VTEC solenoid valve terminal

    Step 27) Start the engine and check the oil pressure at 3,000 rpm

    Is the oil pressure above 390 kPa(4.0 kgf/cm^2, 57 psi)

    YES - Go to Step 28
    NO - Inspect the VTEC soleniod valve

    Step 28) With the battery positive terminal still connected to the VTEC solenoid valve, measure voltage between ECM/PCM connector terminal B9 and body ground.



    Is there battery voltage above 4,000 rpm?

    YES - Go to Step 29
    NO - Replace the VTEC oil pressure switch

    Step 29) Turn the ignition switch off

    Step 30) Disconnect the battery positive terminal from the VTEC solenoid valve terminal

    Step 31) Disconnect the ECM/PCM connector B (24P)

    Step 32) Check the continuity between the ECM/PCM connector terminal B15 and body ground.



    Is there continuity?

    YES - Repair the short in the wire between the VTEC solenoid valve and the ECM/PCM(B15)
    NO - Go to step 33

    Step 33) Connect VTEC solenoid valve 1p connector terminal No. 1 to a body ground with a jumper wire



    Step 34) Check for continuity between ECM/PCM connector terminal B15 and body ground



    Is the continuity?

    YES - Update the ECM/PCM software if it does not have the latest software, or substitute a known-good ECM/PCM, the recheck. If the symptom/indication goes away with a known-good ECM/PCM, then replace the orginal ECM/PCM.
    NO - Repair open in the wire between the VTEC solenoid valve and the ECM/PCM (B15)

    Hope this helps.
    Dan

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