Question about 1997 Toyota 4Runner

1 Answer

Ignition switch replace iginition switch module--the key will only go 1/2 way in...

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 330 Answers

SOMETHING WRONG WITH THE SWITCH, IF THE WIRE CONNECTED RIGHT.

Posted on Jul 09, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How do you replace the ignition switch on a 2002 buick century?


What do you mean no sound when turning key ? Does the car start an run ? Or the car doesn't crank ? Ignition switch's do not work the same way they did in the old days , especially on GM vehicles . The ignition switch is an input to the BCM - body control module , the BCM processes these inputs an then energizes relays to turn things on . Also sends messages to other modules for them to turn on or energize relays .
The power mode signal may be as simple as a B+ input wired to a particular ignition switch contact. If this is also the B+ supply to the module/device, the module/device will only operate with the ignition contact closed to B+. An example of this is the starter relay when it is wired directly to the CRANK/START contact of the ignition switch. When the CRANK/START contacts are closed, the starter relay is energized and provides a current source to the starter and starter solenoid. When the ignition switch leaves the CRANK/START position, the switch contacts open and the starter relay is de-energized. This removes the current source from the starter and solenoid and the starter operation stops.
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the Body Control Module (BCM). The BCM receives 4 signals/circuits from the ignition switch. These are the Ignition 0, Ignition 1, Crank and Accessory 1 ignition switch signals/circuits.
To determine the correct power mode the BCM uses:
?€¢
The state of these signals/circuits, either switch closed (B+ = 1) or switch open (open = 0)


?€¢
The sequence of switch closures received by the BCM


?€¢
The status of the engine run flag.


Important: Any ignition switch states not covered in this table indicates a DTC setting situation.
The chart indicates the modes detected and transmitted by the BCM:
Power Mode Selected/Expected
Engine Run Flag Serial Data
Sampled Ignition Signal State
Power Mode State
Accessory
Ignition 0
Ignition 1
Crank
OFF-LOCK
0
0
0
0
0
OFF
Accessory
0
1
0
0
0
ACCESSORY
RAP
0
1 to 0
0
0
0
RAP
OFF-UNLOCK
0
0
1
0
0
UNLOCK
RAP
0
1 to 0
1
0
0
RAP-UNLOCK
Run
0
1
1
1
0
RUN
Crank
0
0
1
1
1
CRANK
Crank
1
0
1
1
1
CRANK
Run
1
1
1
1
0
RUN
Fail-safe Operation
Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the BCM fail to send a power mode message. The fail-safe plan covers modules with discrete ignition signal inputs as well as those modules using exclusively serial data control of power mode.
Serial Data Messages The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid BCM message until they can check for the engine run flag status on the serial data circuits. If the BCM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is True, indicating that the engine is running, the modules fail-safe to "RUN". In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is False, indicating that the engine is not running, the modules fail-safe to "OFF-AWAKE". In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid BCM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, B+, the modules will fail-safe to the "RUN" power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to "OFF-AWAKE". In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
You probably won't understand any of this info. your best but would be to take it to a qualified repair shop that has proper diagnostic test equipment !

Sep 29, 2016 | Buick Cars & Trucks

1 Answer

1997jimmy cuts off and starts back up when its been sitting for a while. replace iginition modulator, fuel filter, and fuel pump don't know what it is


Here's one thing you can do, carry little gas with you and when it cuts off, pour some gas down the intake manifold or throttle body. If it starts you probably have a fuel problem. If it doesn't start you most likely have a ignition problem. Using a test light check for Power going to your coil or coils. To rule out the ignition switch. But if I were to take a guess, ignition coil or coil wire, and if it has a distributor, ignition module pickup and rotor. Good luck.

Jun 19, 2010 | 1997 GMC Jimmy

1 Answer

When the car gets to operating temp. it losses spark except when you turn the key on it sparks 1 time and i have replaced the iginition control box


My '85 wagon did the same thing. I replaced a small but expensive module inside the distributor and everything worked fine. It was about a hundred bucks for the module ten years ago.

Feb 09, 2010 | 1988 Subaru Justy

1 Answer

1993 S10 Tahoe V-6 4.3 Engine will start in morning runs smooth for about 1 minute, holding the accelerator at about 1/4 then starts to miss for about 15 to 20 seconds then smooths out for about 10 seconds...


you should probably just replace the iginition module if someone didnt test it with a graphing meter or lab scope. also check the fuel pressure. those are signs of the ignition module though

Nov 22, 2009 | 1993 Chevrolet S-10

2 Answers

Got a 2000 chevy 3500 express van how do i get the old ignition switch out to replace it


remove the steering wheel , need a puller and locking ring tool, disconnect batt, turn the key to tho on position, and remove bolt that holds the tumbler in,

Nov 13, 2009 | 2000 Chevrolet 3500

1 Answer

Ignition key will not start truck - 1993 dodge dakota


if you replaced the ignition tou might want to test the plaseic switch that the iginition turns

Dec 04, 2008 | 1995 Dodge Dakota

Not finding what you are looking for?
1997 Toyota 4Runner Logo

Related Topics:

53 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

60792 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...