Volvo Workshop Manuals
940 L4-2.3L SOHC VIN 88 B230F (1992)
Powertrain Management > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Throttle Position Switch > Component Information > Technical Service Bulletins > Throttle Switch/Mechanism - Adjustment > Page 4727
Press and hold test button for at least 5 seconds, then release. LED should light after 3 more seconds.
Press and hold test button for at least 5 seconds, then release. LED should go out.
Check that fault code has been cleared by pressing button once for more than 1 second (but not more than 3 seconds).
Display of flashing code 1-1-1 indicates that fault code has been cleared.
A). ACTION IF ENGINE WILL NOT IDLE:
- Check throttle switch.
This will, however, also increase the normal deposits on the throttle plate; in time, airflow will be reduced correspondingly and the problems can
Connect a jumper lead between terminals 1 and 2 in the throttle switch wiring connector.
Ensure good contact is made between the pins. If no signal is obtained, control unit will enter "LIMP-HOME" mode (applies to LH 2.4 only).
Loosen throttle switch by loosening screws slightly.
Idle engine at working temperature with gear selector lever in neutral and AC system off.
Disconnect hose to idling (CIS) valve as follows:
- LH fuel systems: Disconnect idling valve hose at air hose connection. Plug both idling valve hose and hole in air hose, ensuring that both are fully
- Regina fuel systems: Disconnect idling valve hose at air cleaner. Plug hose.
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