Test Point 3 - Full Load Contact
TEST POINT 3 - Full load contact (Ohms) - Fault code 1_13Possible Causes, Elimination, Remarks
Check by means of circuit input test with a 9288 system tester or 9268 tester
- Select test step and operate the accelerator pedal.
9288 display: Full load contact open
Full load contact closed.
9268 display: 1333 (full load contact open)
0000 (full load contact closed).
No display:
After disconnecting the EZK and LH control unit plugs, connect the ohmmeter to terminals 3 and 5 by means of the test leads.
Display:
Throttle valve closed - infinite resistance
Throttle valve after opening by approx.
two thirds of its travel < 10 Ohms
If the full load contact values are not reached in this test, it should be repeated directly at the throttle valve switch:
- Disconnect plug at throttle valve switch.
- Connect ohmmeter between terminals 3 and 2 of the throttle valve switch by means of the test leads.
Display:
throttle valve closed - infinite resistance
Throttle valve open < 10 Ohms
Note: If the full load contact fails the control unit generates a load threshold by way of the air mass sensor. Values below this load are the same as if the switch were open, values above it the same as if the switch were closed.