|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
06
|
SELECT ACTUATOR
IDLE AIR CONTR
|
Ignition ON
Engine OFF
Press key F5 in system main menu, select the desired test
with the arrow keys and confirm with YES. Follow the instructions in the
TECH 1 display.
Note:
The idle air stepper control switches at a frequency of
0.5 Hz.
The check is completed after a maximum of 30 s.
|
Hold IAC in hand:
clicking sound
|
56,57
|
4,24
|
|
Notes on Trouble-shooting:
|
Nominal Value:
|
Cause of Fault:
|
|
· C 20 XE
engine only:
Remove front right wheel
· Disconnect idle
speed adjuster plug M 33
|
|
|
|
· Ignition ON
· Using multimeter,
measure voltage at idle speed adjuster plug M 33 / Ter. 2
to ground
|
|
|
|
|
11.5 to 13.5 V
|
· Lead interruptions
from control unit K 61 / Ter. 37 or from fuel pump relay
K 68 / Ter. 87 to idle speed adjuster M 33 / Ter. 2
|
|
· Ignition OFF
· Disconnect control
unit K 61 from wiring harness
· Using multimeter,
check from idle speed adjuster plug M 33 / Ter. 1 to control unit
K 61 / Ter. 4 for continuity and short circuit to ground
|
|
|
|
|
Continuity
|
· Short circuit or
lead interruption from idle speed adjuster M 33 / Ter. 1 to control
unit K 61 / Ter. 4
|
|
Nominal values are attained
|
|
· Idle speed
adjuster M 33 defective
· Control unit
K 61 defective
|
|
|
|
|
|
|
|
