|
04
|
SELECT
ACTUATOR
IDLE
AIR CONTR
|
Ignition ON
Engine OFF
Press key F5 in the system main
menu, select the desired test using the arrow keys and confirm with YES.
Follow the instructions in the
TECH 1 display.
Note:
The idle speed regulation
switches at a frequency of 0.5 Hz, the idle speed stepper motor moves between
the two stop points.
The check is completed after a maximum of 30 s.
|
Hold IAC in hand:
clicking noise
|
4,
24
|
56,
57
|
|
· Ignition OFF
· Disconnect control unit K 61 from
wiring harness
· Measure resistance at plug K 61 / Ter.
4 to Ter. 24
|
approx. 16
|
· Lead interruptions from control unit K
61 / Ter. 4 or from Ter. 26 to idle speed adjuster M 33 / Ter. 1 or Ter. 2
|
|
· Disconnect plug from idle speed
adjuster M 33
· Using multimeter, check from idle speed
adjuster plug M 33 / Ter. l to control unit K toil i er. 4 Tor passage and
short circuit to ground
|
Passage
|
· Short circuit or lead interruption from
idle speed adjuster M 33 / Ter. 1 to control unit K 61 / Ter. 4
|
|
· Using multimeter, check from idle speed
adjuster plug M 33 / Ter. 2 to control unit K 61 / Ter. 26 for passage and
short circuit to ground
Nominal values are attained
|
Passage
|
· Idle speed adjuster M 33 defective
· Control unit K 61 defective
|
