Inputs Saab 9-5 I рестайлинг

Inputs

A condition for the control module's capability of controlling its actuators is that the system's sensors supply it with correct values.

Sensor performance can be checked with the diagnostics instrument.

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It is our experience that the majority of control modules returned to us for repair or replacement under warranty are in perfect working order. In these cases, fitting a new control module has obviously not cured the fault. Therefore, go through all the following points carefully before changing the control module

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1. Check the latest edition of TIS2000 to see whether the problem can be solved with a control module software update (for control modules that can be reprogrammed). IMPORTANT: Avoid SPS programming unless it is absolutely necessary. It is extremely important to follow the instructions for SPS programming to avoid damaging the control module.
2. Check all grounding points and the power supply to the control module.
3. Check with a diagnostic tool that all the readings are plausible (several readings can affect one function).
4. Check with the diagnostics tool that all activations function normally. (Malfunction in one output circuit can affect another output circuit).
5. If the fault persists, the control module must be changed. Fill in the "Checklist for changing turbocharger and engine control module" before changing the control module and attach it when the control module is returned.
6. Control modules are sensitive to electrostatic discharges. Great care must be taken to follow the following procedure to avoid damaging internal components in the control module: Keep the control module in its packaging for as long as possible. Never touch the pins of a control module with your hands or clothing. Ground yourself by touching part of the car's body/engine. Unplug the connector from the car's control module. Place the exchanged control module in its return packaging without touching the pins. Ground yourself by touching part of the car's body/engine. Plug in the connector to the car's control module.

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A suitable instrument to use is a multimeter.

The ohmmeter must not be used to test components containing semi-conductors, e.g. control modules and relay with timing functions, etc.

When measuring resistance, the power supply to the system being tested must be disconnected as the measuring instrument generates a weak current in the circuit in question.

This is done to ensure that there is no current already in the tested circuit and that the correct reading is obtained.

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1. Turn on the load.
2. Set the multimeter for measuring voltage and connect the negative lead of the voltmeter to a good grounding point.
3. Connect the positive lead of the voltmeter to the point where the voltage is to be read.
4. On the output side of switches/control modules, it is better to start checking from these and gradually work your way towards the load. When there is no longer a voltage reading, you will have gone past the break point.
5. On the input side of switches/control modules/consumers, it is better to start at the power source (normally a fuse) and then move gradually towards the switch/control module/consumer. When there is no longer a voltage reading, you will have gone past the break point.

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1. Make sure the component or lead to be tested is not under tension (e.g. by removing the relevant fuse).
2. Set the multimeter for measuring ohms and connect the ohmmeter to each end of the component/lead to be tested.
3. Jiggle the relevant wiring harness while observing the ohmmeter. Normally, the resistance of a wiring harness is less than 1 ohm. Specified values apply to components.

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1. Make sure the lead being tested is not under tension (e.g. remove the relevant fuse) and that any loads are disconnected.
2. Set the multimeter for measuring ohms.
3. Connect one test lead to a good ground and the other to the point to be tested.
4. Carefully jiggle the wiring harness and make sure the multimeter reading shows infinite resistance (OL) all the time.

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1. When unplugging a connector that has a catch, the catch must be undone first before parting the connector. Make sure the connector catch engages properly when plugging in the connector. Examples of some of the different types of connector in the car: 1.A. Pull out the sheath to undo the connector catch. After plugging the connector in, press in the sheath to lock the connector. NOTE: Use a small screwdriver to help undo the catch on the connector. 1.B. Press in the catch to release the connector. Make sure the connector is securely locked when plugged back in. 1.C. Pull out the sheath to undo the connector catch. After plugging the connector in, press in the sheath to lock the connector. 1.D. Press in the catch on the wire clamp and tip the wire forward. Plug in the connector and lock it by raising the wire clamp. NOTE: Make sure the wire clamp is locked in the correct position, to ensure good contact in the connector. 1.E. Raise the catch to release the connector. Make sure the connector is securely locked when plugged back in. 1.F. Press in the catch on the connector to release the wire clamp. Release the connector sheath and fold forward the wire clamp. NOTE: Using greater force than necessary attempting to fold the wire clamp forward before the sheath has been released can damage the connector. Plug in the connector and lock it by raising the wire clamp.
2. Ground yourself, by touching the car's body or engine, when unplugging or plugging in the connectors on the car's control modules.
3. Never unplug a connector by pulling the wiring.
4. Never touch the pins on a control module with your hands or clothes. IMPORTANT: Incorrect handing or the use of the wrong tool can damage the sleeves in the connector. Use a test cable (part no. 86 12 731) of the correct size to avoid damaging the sleeves in the connector.
5. When taking measurements, use only probes designed for this purpose to avoid damaging the contacts. Use a test cable (part. no. 86 12 731) of the correct size.
6. For repairs to connectors, the correct special tools and spare parts must be used.
7. The following connectors may not be repaired: Screened cables/coaxial cable (e.g. ABS sensor cable) Airbag system and pyrotechnic belt pretensioner system High-tension cables (e.g. ignition system, xenon headlamps).

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1. Check that there are no problems with contact on connection.
2. Check contacts, connectors and crimps for oxidation, withdrawn pins and pin clamping force. IMPORTANT: Incorrect handing or the use of the wrong tool can damage the sleeves in the connector. Use a test cable (part no. 86 12 731) of the correct size to avoid damaging the sleeves in the connector.
3. To check the clamping force, use a test cable with the correct size pins (from set 86 12 731). NOTE: A test cable with too large pins will damage the sleeves in the connector. Insert the test cable pin into the connector to check the pin clamping force. Poor clamping force can cause intermittent contact. Check also that the pin is aligned with the other pins in the connector. A pin that is recessed (pushed out) can cause intermittent breaks.
4. Check the wiring and connections for breaks.
5. Check the wiring harness, connectors and ground connections.

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No conditions