Question about 2004 Toyota 4Runner

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The service engine light is flashing, loss of power through rpm range, and has no DTC codes, flashes untill I come to a stop.

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If the Service engine light is flashing, that indicates the presence of a missfire condition, also know as pinging, or preignition. If the light is flashing you could potentially be harming the engine even further by driving it any distance at all!

Posted on Dec 12, 2009

  • Dave Oct 05, 2011

    How do I repair this??Which one is cylinder 4?

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Posted on Jan 02, 2017

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On my 03 Silverado z71, I have replaced the switch. I checked the fuses. The switch doesn’t light up and the dash says service 4wd.


The switch is just a input to the transfer case shift control module . Service 4wd message means DTC'S diagnostic trouble code's are stored . You need to take to a qualified repair shop that has a professional scan tool that can read these code's. How many button's on the switch ? 3 or 4 Which transfer case does your's have ?
Transfer Case - NVG 149-NP3
Transfer Case - NVG 246-NP8
Transfer Case - NVG 261-NP2
Transfer Case - NVG 263-NP1

The NVG 246 EAU transfer case features a 4 button shift control switch located on the instrument panel. When the ignition key is in the RUN position, the transfer case shift control module monitors the transfer case shift control switch to determine if the driver desires a new mode/range position. At a single press of the transfer case shift control switch, the lamp of the new desired position will begin flashing to inform the driver that the transfer case shift control module has received the request for a new mode/range position. The lamp will continue to flash until all shifting criteria has been met and the new mode/range position has been reached, or has been engaged. Once the new mode/range position is fully active, the switch indicator lamp for the new position will remain ON constantly.

The NVG 263 transfer case features a three button shift control switch located on the instrument panel. When the ignition is in the RUN position, the transfer case shift control module (TCCM) starts monitoring the transfer case shift control switch to determine if the driver desires a new mode/gear position. At a single press of the transfer case shift control switch, the lamp of the new desired position begins flashing to inform the driver that the TCCM has received the request for a new mode/gear position. The lamp continues to flash until all shifting criteria has been met and the new mode/gear position has been engaged. Once the new mode/gear position is fully active, the switch indicator for the new position remains ON constantly. In the event that the TCCM can not or will not complete the shift, the indicator returns to the previously selected position; this is a Transfer Case Shift Control Switch Indicator Flashes, then Returns to Previous Mode condition.

Both of these can set a few different code's
DTC B0790
DTC B2725
DTC C0306
DTC C0327
DTC C0359
DTC C0379
DTC C0550

DTC B0790
DTC B2725
DTC C0300
DTC C0305
DTC C0306
DTC C0321
DTC C0327
DTC C0359
DTC C0374
DTC C0379
DTC C0550

Your best bet , take it to a qualified repair shop.

Sep 01, 2018 | Cars & Trucks

1 Answer

What will cause a 1999 Pontiac Sunfire to not go into the extended learn mode when replacing the ign lock assembly .


Did you clear codes ? . All codes in the theft deterrent module must be cleared for a relearn.
PASSLOCK Changing - Components Description
Important: Due to component variability, the vehicle theft deterrent (VTD) system must have the learn procedure performed regardless, if the vehicle starts on the first ignition cycle after a VTD repair.
All codes in the theft deterrent module must be cleared for a relearn.
Engineers design the Passlock™ system in order to prevent theft even if the various theft deterrent parts change. The Tamper mode will engage if any of the following components change:
• The Passlock™ lock cylinder
• The instrument cluster
• The powertrain control module (PCM)
If you replace any of the above components, the system will enter the long tamper mode. If the system enters the long tamper mode, ensure that the system completes a long tamper mode cycle. During the long tamper mode cycle, the THEFT indicator will flash for the full 10 minutes. The instrument cluster and the PCM require the full 10 minutes in order to complete the learn cycle. Ensure that the ignition switch remains in RUN until the indicator stops flashing. If you turn the ignition switch before the indicator stops flashing, repeat the long tamper cycle from the beginning.
Are there any codes ?
Problem
Action
The THEFT SYSTEM indicator will not light under any circumstances.
Replace the instrument cluster.
For Chevrolet vehicles, refer to Instrument Cluster Replacement .
For Pontiac vehicles, refer to Instrument Cluster Replacement .
Multiple indicators light continuously.
Test for a loss of serial data. Refer to Data Link Connector.
Instrument cluster DTC B1021 sets.
The DTC indicates a loss of powertrain control module (PCM) serial data. Refer to Data Link Connector.
Instrument cluster DTC B1022 sets.
The DTC indicates a loss of SIR serial data. Refer to Data Link Connector.
Instrument cluster DTC B1023 sets.
The DTC indicates a loss of ABS serial data. Refer to Data Link Connector.
PCM DTC P1601 sets.
The DTC indicates a loss of PCM serial data. Refer to Data Link Connector.
PCM DTC P1629 sets.
The DTC indicates PCM Theft Deterrent failure. Refer to the appropriate diagnostic table in Engine Controls.
Instrument cluster DTC B1011 sets.
Refer to DTC B1011 Passlock Cyl Data Shorted This Ign Cycle .
Instrument cluster DTC B1012 sets.
Refer to DTC B1012 Passlock Bad R-code This Ignition Cycle .
Instrument cluster DTC B1013 sets.
Refer to DTC B1013 Passlock Bad Timing This Ignition Cycle .
Instrument cluster DTC B1014 sets.
Refer to DTC B1014 Passlock R-code Unprogrammed .
Instrument cluster DTC B1015 sets.
Refer to DTC B1015 Passlock Cluster Fail Enabled .
Instrument cluster DTC B1017 sets.
Refer to DTC B1017 Passlock R-code Learn Failed .
The indicator flashes and no instrument cluster codes are set.
Refer to DTC B1013 Passlock Bad Timing This Ignition Cycle (the diagnostic table for DTC B1013).

Apr 07, 2017 | 1999 Pontiac Sunfire

1 Answer

Symptoms 1996 sable po500 code


speed sensor failure

Symptoms of a P0500 DTC may include
: loss of anti-lock brakes the "anti-lock" or "brake" warning lamps on the dash may be lit the speedometer or odometer may not work properly (or at all) your vehicle's RPM limiter may be decreased the shifting of an automatic transmission may become erratic other symptoms may also be present

Read more at: https://www.obd-codes.com/p0500
Copyright OBD-Codes.com

Oct 15, 2016 | 1996 Mercury Sable

1 Answer

1990 jeep grand Cherokee stalls when coming to a stop. The transmission otherwise feels good. TCM? It acts like its not downshifting.


first off, no engine stated, 2.5 or 4.0L USA car, or export?
nor if restart at at stall are easy.?-


its not the TCM, because the TC clutch disengages at low RPM
regardless of what gear the TCM stuck you in.
its and engine problem. 99.9% (sure a bad rare clutch internals.)
so can you save that stall with fast right foot. this is #1 all time key fact for any stalls.!
if the EGR , some jeeps have one, on some engines
sticks open the engine stalls.
if the car has not been tuned up this decade, sure, it will stall , how can any engine not?
if the stall can be saved, with right foot,
hard. to do but can, EGR ( P040x Dtc codes. stored)"?
if very easy, the engine might be staving for air (ISC/IAC) stuck.
if impossible (spark died, no tune ups ever) or loss of fueling


more, sure
is the CEL lamp glowing key on.
did you use any scan tool to see if there are DTC errors at the stall.
or during,,,,, all key checks to finding it.
did the ASD relay cause the stall,, ??? if it did , then there are DTC errors. stored. get them with a scan tool or using the key trick.

now my useless guess.
the car has never had a tuneup.

the ASD works like this.
http://www.fixkick.com/Jeeps/ASD.html


free FSM her
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service



the secret key trick is here. (a real scan tool is 10x better)
Start with the ignition off. Within five seconds, switch the key on, off, on, off, on. ("On" is NOT "Start" and "Off" is NOT "Lock").
The "check engine" light will flash. (codes)
Count the flashes. Each code is a two digit code,for example,23 would be FLASH FLASH (pause) FLASH FLASH FLASH (long pause). It may flash out up to 9 codes.

Oct 24, 2014 | Jeep Grand Cherokee Cars & Trucks

1 Answer

Where is the obd2 connector location on holden ra rodeo v6


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Connect white (test lead) and black (ground lead) wires that are branched from harness approximately eight inches from ECM. After leads are grounded, the "Check Engine" light will flash the diagnostic trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.I-MARK 84-85
Connect male and female test leads taped into wire harness near ECM. After leads are connected, the "Check Engine" lamp will flash the trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.
86-87 Impulse located near the ECM connector, is used to actuate the Engine Control Module (ECM) trouble code memory within the module. Two terminals (A and C) of this connector are used to activate the diagnostic trouble code system in the ECM. With the ignition switch turned On, engine Off, connect a jumper wire between terminals A and C. The "Check Engine" lamp will begin by flashing a DTC 12. DTC 12 = flash, pause, flash, flash. There will be a longer pause and a code 12 will repeat two more times. This code indicates the self-diagnostic system is operating. The cycle will then repeat until the engine is started or the ignition is switched Off. In most cases, DTC's will be checked with the engine running since no DTC's other than DTC 12 or 51 will be present without the engine running. Remove jumper wire from ALDL connector before starting engine. Reconnect jumper wire after engine is running.

Throttle Body Fuel Injection

The ECM test connection is located under the center console.
A built-in, self diagnostic system will identify problems in the throttle body fuel injection system. When a problem is detected, the diagnostic system will illuminate the "Check Engine" light.
When the engine is started, the Check Engine light should turn off.. If the light remains lit, the self diagnostic has detected a problem. To determine where the problem exists, ground the "Test" terminal of the connector with the ignition On, engine Off and watch the check engine light. Each DTC will flash three times (lowest to highest).

Aug 21, 2014 | Holden Rodeo Cars & Trucks

1 Answer

What is service engine light code 12 mean



READING CODES USING MIL (CHECK ENGINE) LAMP

Be advised that the MIL or CHECK ENGINE light can only perform a limited number of functions and it is a good idea to have the system checked with a scan tool to double check the circuit function.

  1. Within a period of 5 seconds, cycle the ignition key ON - OFF - ON - OFF - ON .
  2. Count the number of times the MIL (check engine lamp) on the instrument panel flashes on and off.

The number of flashes represents the trouble code. There is a short pause between the flashes representing the 1st and 2nd digits of the code. Longer pauses are used to separate individual 2-digit trouble codes.
An example of a flashed DTC is as follows:


Lamp flashes 4 times, pauses, then flashes 6 more times. This denotes a DTC number 46. Lamp flashes 5 times, pauses, then flashes 5 more times. This indicates a DTC number 55. DTC 55 will always be the last code to be displayed.


0900c1528007935b.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 2: Diagnostic trouble code chart (1 of 2)-1995-97 engines


0900c1528007935c.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 3: Diagnostic trouble code chart (2 of 2)-1995-97 2.0L engines

Jul 26, 2012 | 1995 Dodge Neon

1 Answer

Flashing service engine light, rpm's bounce, loss of power


you have an engine misfire, to find out which cylinder is the one have the computer fault codes read/checked by a Kragen or Autozone parts store it is free, the last number in the fault code is the cylinder that is misfiring

Jul 19, 2010 | 1996 GMC Jimmy

1 Answer

WHY IS THE SERVICE ENGINE LIGHT ON IN MY SATURN??


The Check Engine light will light when the ECU stores a trouble code.
Counting the Flashes
To retrieve trouble codes, turn the ignition key to the "on" position with the engine OFF.
The Check engine light will flash many short blinks. The total number of blinks equals the code number. For example, flash,pause, flash,flash = code 12.If more than one code is stored, the Check engine light will flash the codes in sequence (lowest to highest) with a pause between each code. The codes will repeat until the key is turned to the OFF position.

11 Transaxle codes present 12 Diagnostic check only 13 Oxygen sensor circuit 14 Coolant sensor/high temperature 15 Coolant sensor/low temperature 17 PCM fault - pull-up resistor 19 6X signal fault (92-95 models) 21 Throttle position sensor-voltage high 22 Throttle position sensor-voltage low 23 IAT circuit low 24 VSS circuit-no signal 25 IAT circuit-Temp out of high range 26 Quad driver output fault 32 EGR system fault 33 MAP sensor - voltage out of range high 34 MAP sensor - voltage out of range low 35 IAC - rpm out of range 41 Ignition control circuit-open or shorted 42 Bypass circuit - shorted or open 41/42 IC control circuit grounded/bypass open 43 Knock sensor circuit shorted or open 44 O2 sensor indicates lean condition 45 O2 sensor indicates rich condition 46 Power steeringpressure circit(91 models)open or shorted 49 High idle indicates vacuum leak 51 PCM memory error 53 System voltage error 55 A/D error 58 trans fluid temperature too high 59 Trans fluid temperature too low 66/67 A/C pressure sensor 81 ABS message fault 82 PCM internal communication fault

Mar 10, 2010 | 1992 Saturn SL2

1 Answer

Engine light flashes when accelerator pedal is applied accompanied by severe power loss and trouble revving up


the check engine light is flashing to alert you to the fact that the engine has a missfire in the ignition system, don't continue to drive this with the condition or u can overheat and damage the catalytic converter.

May 11, 2009 | Mercedes-Benz E320 Cars & Trucks

1 Answer

Intermittant loss of acceleration on my 1991 plymouth sundance


Turn key, on, off, on, off, on & leave it on (not start) & count check engine flashes. 2 digit codes, for example: flash, flash, flash, pause, flash,flash., is code 32

Mar 29, 2009 | 1991 Plymouth Sundance

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