Vauxhall Corsa Workshop Service and Repair Manuals

The injection period is an internal value of the control unit.

If the injection period deviates considerably from the above values, check the following points:

All consumers switched off                                                     ?

Circuit closed                                                                            ? (test step 07)

Integrator                                                               OK             ? (test step 09)

02 BLM IDLE THR.                                             OK             ? (test step 10)

02 BLM PART THR.                                           OK             ? (test step 11)

Transmission in idle speed P/N position                              ?

Throttle valve potentiometer                              OK             ? (test step 04)

Intake manifold pressure sensor                        OK             ? (test step 03)

Idle speed stepper motor                                    OK             ? (test step 06)

Basic adjustment of ignition                                 OK             ? (test step 17)

If all above-mentioned check points are OK: Disconnect control unit from vehicle electrical system (reset), repeat test.

Trouble-shooting:                                 Nominal Value:                       Cause of Fault:

(If nominal value is not attained)

· Ignition ON                                                         1.0 to 1.2 ms

Engine at idle speed at 1500 rpm                     Switch off consumers!

(mode "F7", submode "F0") and

is at operating temperature.                              The injection time must slightly · Control unit defective

- Adjust to 1000 rpm using the                              increase as the engine speed

arrow keys on TECH 1.                                    decreases.