Instrument Cluster / Carrier: Service Precautions
Control Module:Connecting/Disconnecting:
Always switch off the ignition before connecting or disconnecting a connector or the test box to a control module.
Temperature:
The control module must not be heated to above 80° C. Remove control module when stoving for example.
Arc Welding:
- Disconnect connector from control modules when arc welding.
- Remove control module before carrying out any arc welding work close to it.
Replacing:
- Do not replace a control module without checking its wiring and components. The new component may be damaged in the same way as the old one.
Ignition and High Tension Components:
Switch ignition off for about 90 seconds before:
- Connecting and disconnecting test instruments
- Connecting and disconnecting connectors.
- Taking readings with an ohmmeter.
HIGH VOLTAGE:
WARNING: The ignition system operates at high power and voltages. It is dangerous to come in contact with the high tension circuit the ignition coil, spark plug caps and distributor cap. Dangerous voltages are present at all points in the system, including connectors etc.
CAUTION: Avoid sparking when working on the fuel system, especially when working on injectors.
Battery:
WARNING: While the battery is being charged an explosive mixture of oxygen and hydrogen gases is formed. Smoking, welding, grinding or other activities involving sparks or naked flames are prohibited in the vicinity of a charging battery. Batteries must be charged in a well ventilated area.
CAUTION: Boost charging (with a high current or voltage above 16 V) will damage the battery and is prohibited.
When testing components it is important that battery voltage is normal (approx. 12 V). If necessary, a battery charger can be connected during testing.
- Connect battery charger to the battery terminals. Charge battery for approx. 10 hours at the recommended current - maximum 6 A.
Example: If the battery is marked 520 A a charge current of 0.01 x 520 = 5.2 A is recommended.
- A higher than recommended charge current can damage the battery.
Cleanliness:
Cleanliness is particularly important when working on the fuel system. Clean fuel line connections thoroughly before disconnecting.