|
RON
CODING
|
=
|
Octane
number setting
|
|
COOLANT
TEMP.
|
=
|
Coolant
temperature
|
|
INTAKE
AIR TEMP.
|
=
|
Intake
air temperature
|
|
MAP
SENSOR
|
=
|
Intake
manifold absolute pressure sensor
|
|
TPS
SIGNAL
|
=
|
Throttle
valve potentiometer
|
|
DIAG.
REQUEST
|
=
|
Diagnostic
excitation lead (ALDL pin "B")
grounded = ACTIVE
not grounded = INACTIVE
|
|
FUEL
PUMP RELAY
|
=
|
Fuel
pump relay
|
|
PARK/NEUTRAL
SW.
|
=
|
Selector
lever position (AT only)
|
|
TORQUE
CONTROL
|
=
|
Torque
reduction during shifting operation
(load
reduction ignition retard: i.e. the firing angle is retarded during the
shifting operation).
|
|
VEHICLE
SP.PULSE
|
=
|
Speed
sensor signal: RECEIVED / NOT RECEIV
|
|
VEHICLE
SPEED
|
=
|
Vehicle
speed
|
|
DESIRED
IDLE
|
=
|
Engine
nominal speed (selected in TECH 1 mode "F8")
|
|
ENGINE
SPEED
|
=
|
Engine
actual speed
|
|
IDLE
AIR CONTROL
|
=
|
Idle
speed stepper motor or idle speed adjuster
|
|
SPARK
ADVANCE
|
=
|
Firing
angle
|
|
O2
SENSOR LOOP
|
=
|
Open/closed
loop
|
|
O2
SENSOR
|
=
|
Oxygen
sensor voltage
|
|
O2
INTEGRATOR
|
=
|
Oxygen
sensor integrator
(part
of control unit used for determining loop deviation between: nominal mixture
and actual mixture)
|
|
O2
BLM ENABLE
|
=
|
O2
MSTS correction switched on: ACTIVE / INACTIVE
|
|
O2
BLM CELL NO.
|
=
|
O2
MSTS correction field number (these engines have more then two O2 MSTS field
correction cells. If the field number given for idle speed is not attained,
check the throttle valve potentiometer)
|
|
O2
BLM CELL CONT
|
=
|
O2
MSTS correction field contents (the nominal contents must be compared with
the data list. Ensure that the field number is correct).
|
|
AIR/FUEL
RATIO
|
=
|
Air/fuel
ratio: RICH / LEAN
|
|
INJECTION
PULSE
|
=
|
Injector
opening period (injection period)
|
|
CLEAR
FLOOD MODE
|
=
|
Lean
mixture for starting switched on:
ACTIVE
/ INACTIVE
|
|
DEC.
FUEL CUTOFF
|
=
|
Deceleration
fuel cut-off: ACTIVE / INACTIVE
|
|
POWER
ENRICHMENT
|
=
|
Full
load enrichment: ACTIVE / INACTIVE
|
|
IAC
CNTR. ENABLE
|
=
|
Idle
air control: ACTIVE / INACTIVE
Idle
air control ACTIVE means: the engine is at idle speed and the control unit is
using the stepper motor to try and keep the idle speed stable.
Idle
air control INACTIVE means: the control unit cannot recognize an idle
situation. The above mentioned control is not switched on.
|
|
A/C
INFORMAT. SW
|
=
|
Air
conditioning switch in passenger compartment
|
|
A/C
LOAD SIGNAL
|
=
|
The air conditioning load switch is closed when the
pressure in the air conditioning circuit exceeds a certain limit. This can be
the case if, for example, the vehicle interior is very warm and the air
conditioning has to work very hard to lower the temperature. In this case,
the engine control unit receives information (12 V) and opens the idle air
control (IAC) to prevent the engine speed dropping at idle speed.
|
|
A/C
RELAY
|
=
|
Air
conditioning relay for actuating the AC clutch
|
|
A/C
CUTOFF
|
=
|
Air
conditioning cutoff when certain conditions are fulfilled, e.g. excessive
engine temperature or load.
The
air conditioning is cut off via the air conditioning relay.
The
display in test steps 31 & 32 must always change at the same time.
|
|
CO
FUEL CORREC.
|
=
|
CO
adjustment (14 SE engine only)
|
|
QUAD
DRIVER TEST
|
=
|
Quad
output amplifier for actuation of:
Engine
telltale K 57/91 Ter. C1
Air
conditioning relay K 57/91 Ter. A 10
Engine
load signal (from engine ECM to transmission TCM) K 57/91 Ter. B 5
The
last output is unoccupied.
|
|
MY
|
=
|
Model
Year
|
|
MULTEC
M
|
=
|
Control
unit for the 14 SE, C 14 SE, C 16 SE engine
|
