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Need ecm wiring diagrams to injection - Rodeo Isuzu Cars & Trucks

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Need wiring diagram oj izusu 4jg2

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Need pin for fuel sending unit from ecm to gauge

Posted on Mar 31, 2013

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ZJLimited
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SOURCE: need wiring diagram for the ecm on a 94 chevy s10

Throttle Position Sensor (TPS) is connected to the throttle shaft on the throttle body. It is a potentiometer with one end connected to 5 volts from the VCM and the other to ground. A third wire is connected to the VCM to measure the voltage from the TPS. As the throttle valve angle is changed (accelerator pedal moved), the output of the TPS also changes. At a closed throttle position, the output of the TPS is low (approximately 0.5 volts). As the throttle valve opens, the output increases so that, at wide-open throttle, the output voltage should be approximately 4.5 volts. By monitoring the output voltage from the TPS, the VCM can determine fuel delivery based on throttle valve angle (driver demand).

zjlimited_1639.jpg

Fig. 1: Common Throttle Position Sensor (TPS) wiring diagram (wire color, terminal identification/location may vary on certain models)


In addition, I send you some wiring diagrams that coud helpful (click image for zoom)...

zjlimited_1640.jpg

Fig. 7: 1996 GM 4.3L Engine Schematic

zjlimited_1641.jpg

Fig. 10: 1996-1997 GM S10/Blazer Chassis Schematic

Hope this helps.

Posted on Jul 28, 2011

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Hi, looking for a ECM wiring diagram on a Chevy Captiva 3.2 2007. Please


Your question is a little broad. Can you tell us the problem? If your having a problem with ignition or fuel system, something like that, I can help with wiring diagrams. If you need voltage and ground for pcm, I can't help with that. Can you narrow the problem down, a little?

To post a diagram of every little wire that comes off the pcm and show where it goes, is too much for me.

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How can I set/reset injection timing diversion code P0216-A


Yes you need the dealer for this, it requires special testing and special testing equipment to diagnose the problem ands repair it, there is no quick fix, period.

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Can any. One tell me why I can. Not get a Injection pluses and no power at the crank Angel sensor on my 1999 holdan Jr. Vctar


Both those sensors(crank and cam) Have the power wire in common. They are both powered by the ECM. You'll need to find where that wire goes in the ECM plug. Probe it close to the plug. If you have power there. It is a broken wire. If no power. Pull the plug and check for corrosion. Plug it back in and recheck for power. Still no power. Check all ECM fuses Pull them and look. All good, check for power one more time. no power, replace the ECM

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84 pontiac fiero 2.5l previous owner cut the factory wire harness and wired in a single pole relay. Now the two speed fan only runs when the engine gets to temp. need diagrams or someone to explain how to...


what you have to know is the ECM in those year start the injection . Coolant fan work by a relay and the relay is control by ECM a ground to relay. Find out the wire for A/C to relay.then find a + wire for current to relay then power from relay to coolant fan.if you want two speed to coolant fan you need at least 3 wires at coolant fan motor.

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1 Answer

Need to wireing diagram for iat sensor


Vehicles: all computer-controlled internal compustions engines equipped with an IAT (Intake Air Temperature) sensor

Intake Air Temperature (IAT) Sensor

Operation - IAT

This sensor is a resistor based sensor which detects the intake air temperature. According to the intake air temperature reading the ECM/PCM will control the necessary amount of fuel injection.

ECM = Engine Control Module (aka "the car's computer")
PCM = Powertrain Control Module (aka "the car's computer")

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1 Answer

I would like a diagram for my ecmb fuse for a 1992 s10 blazer 4x4 4.3 litre engine


Hi, the ECM B fuse powers the ECM and the fuel pump. It's hard to say where the ECM power is used, since it appears as a black box in the schematic. The fuse box or owner's manual may indicate circuits that the fuse powers thru the ECM. If you find you need additional diagrams, please let me know and please specify if you have the VIN W (central point injection) or the VIN Z (throttle body injection) engine.

jturcotte_1506.gif

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1 Answer

I swapped my 1984 enine ecm and wiring harness for a 1987 engine, harness , and ecm. the engine won't start very weak spark at the coil i swapped it out also


could possibly be that yiu got ecm and harness for full fuel injection instead of throttle body injection.if not it could be that sensors such as craqnk and others mus be changed to match programing on 1987 ecm there could be diferant parameters programed for emissions and soforth.

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1 Answer

The cilynder #1 and spark plug is wet with gas,I did chenged the injector an fuel pressure regulator,still the same engine is shaking, nissan sentra 1993


Did you change the spark plug?? Your car (1993) has a distibutor assy, which means it has ignition wires for each plug. How are your wires??cap?? rotor?? Have you ever done ignition tune up?? If the answer is yes and you have already installed new injector and pressure regulator (althoug it still could be a injection issue/ECM or computer, because ECM is what drives the injectors. If the ECM or wiring to #1 injector has an issue, the injector will not fire off and put gas into the cylinder, resulting in a misfire.) Remove #1 injector connector and check to see if you have power/12V on one side of the connector. If you have 12V there, than check the other wire for continuity to the ECM. You will need wiring diagram to find the right wire color at the ECM. That other wire goes into the ECM to the driver which opens and closes the injector depending on your demands as far as gas pedal input. That driver may be bad, causing the injector not to shoot gasoline. Than I would be looking into a engine issue, such as burned valve, or head gasket problem (coolant getting into #1 cylinder, flooding your spark plug). Tough to diagnose over the computer and not looking at it my self. Let me know what you find.

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1 Answer

Vw passat 2000 1.8t front wheel drive


please rate me solved...thanks

DTC P0411/16795: SECONDARY AIR SYSTEM - INCORRECT FLOW DETECTED
Test Requirements
Ensure all fuses are okay, battery voltage is at least 11.5 volts, all electrical accessories are off, A/C is off.
Ensure engine is mechanically sound.
Test Procedure

NOTE
Secondary air system is activated by ECM and blows air into exhaust pipe
upstream of catalytic converter for 100 seconds during a cold start, 41-91°F (5-
33°C). Engine must be cold to perform following test procedure.

1. Ensure fuse and secondary fuse (secondary fuse is 40 amp and is located in fuse holder on top of battery)
are okay. Check hoses and components of Secondary Air Injection System, for damage, loose fit and
improper installation, check vacuum hoses for Secondary Air Injection System. Repair as necessary.
Erase DTC memory. Verify repair. If DTC does not reset, test is complete. Perform ECM relearn
procedure. See TEST DRIVE RELEARN PROCEDURE .
2. Remove engine cover. Disconnect pressure hose from Secondary Air Pump Motor (V101), by pressing
buttons on hose connector. See Fig. 33 . Using scan tool, check Secondary Air Pump Motor (V101) in
scan tool Output Diagnostic Test Mode (Secondary Air Pump Relay activation mode). See OUTPUT
DIAGNOSTIC TEST MODE .
3. Secondary Air Pump Motor (V101) should run in intervals and air should exit pump at hose connection.
If Secondary Air Pump Motor (V101) is okay, go to step 7 . If motor runs and no air exits secondary air
pump motor, replace faulty Secondary Air Pump Motor (V101). Erase DTC memory. Verify repair. Test
is complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN PROCEDURE . If
secondary air pump motor does not run, go to next step.
4. Disconnect Secondary Air Pump Motor (V101) harness connector, install LED test light at secondary air
pump harness connector terminals. Turn ignition on. Using scan tool, activate Secondary Air Pump Motor
(V101) in scan tool Output Diagnostic Test Mode (Secondary Air Pump Relay activation mode). See
OUTPUT DIAGNOSTIC TEST MODE . LED test light at Secondary Air Pump Motor (V101) harness
connector should flash. If LED test light at Secondary Air Pump Motor (V101) harness connector does
not flash, go to next step. If LED test light at Secondary Air Pump Motor (V101) harness connector
flashes, replace faulty Secondary Air Pump Motor (V101). Erase DTC memory. Verify repair. Test is
complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN PROCEDURE .
5. Using DVOM check resistance of Secondary Air Pump Motor (V101) wiring. See appropriate WIRING
DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS. Resistance should
be a maximum of 1.5 ohms for each reading. Check wiring for short circuit to one another in Secondary
Air Pump Motor (N101) harness connector. Repair as necessary. Erase DTC memory. Verify repair. Test
is complete. Perform ECM relearn procedure.
Secondary Air Pump Motor (N101) wiring is okay, go to next step.
6. Check Secondary Air Pump Relay (J299) and Secondary Air Pump Relay (J299) wiring. See DTC
P0418/16802: SECONDARY AIR PUMP RELAY (J299), MALFUNCTION . Repair or replace as
necessary. Erase DTC memory. Verify repair. Test is complete. Perform ECM relearn procedure. See
TEST DRIVE RELEARN PROCEDURE .
7. Disconnect vacuum hose from Secondary Air Injection Valve (N112) and disconnect pressure hose from
secondary air pump motor, press buttons on pressure hose connector to disconnect pressure hose. See Fig.
34 . Blow lightly into disconnected pressure hose, Combi-Valve should be closed. Connect hand vacuum
pump to disconnected vacuum hose and apply vacuum to Combi-Valve, Combi-Valve should open. If
Combi-Valve opens when vacuum is applied, Combi-Valve is okay. Go to next step. If Combi-Valve
does not open when vacuum is applied, replace faulty Combi-Valve. Erase DTC memory. Verify repair.
Test is complete. Perform ECM relearn procedure. See TEST DRIVE RELEARN PROCEDURE .
8. Check Secondary Air Injection Valve (N112). See DTC P0412/16796: SECONDARY AIR
INJECTION VALVE (N112), ELECTRICAL CIRCUIT MALFUNCTION . Repair as necessary.
Erase DTC memory. Verify repair. Test is complete. Perform ECM relearn procedure.
NOTE: Do not use compressed air to check Combi-Valve.
2000 Volkswagen Passat GLS
2000 ENGINE PERFORMANCE Self-Diagnostics - 1.8L Turbo

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