Actron Code Scanner CP9015 Instruction Manual page 49

• Many of the codes
listed may not apply to
your vehicle.
• Use the definition that
applies to your engine
type: In-Line 4 or 6
cylinder (I-4, I-6) or V-6
or V-8.
• Follow vehicle service
manual procedures to
find the cause of the
code.
Remember:
1) Visual inspections are
important!
2) Problems with wiring
and connectors are
common, especially for
intermittent faults.
3) Mechanical problems
(vacuum leaks, binding
or sticking linkages,
etc.) can make a good
sensor look bad to the
computer.
"High Altitude" computer
adjusted for operation at
high elevations such as in
Denver, Colorado.
(All except High
Altitude): System pass.
(High Altitude only):
Altitude (ALT) circuit is
open.
System pass.
(All except High Altitude):
System pass.
(High Altitude only):
Altitude (ALT) circuit is
open.
(All except High Altitude):
System pass.
(High Altitude only):
Altitude (ALT) circuit is
open.
RPM out of
specification – Throttle
Kicker (TK) system.
Knock Sensor (KS)
signal not detected during
Key On Engine Run
(KOER) Self-Test.
Key On
Engine Run (KOER) Self-
Test not initiated.
Exhaust
Gas Oxygen (EGO)
sensor: voltage signal
always "lean" (low value) –
does not switch.
Exhaust
Gas Oxygen (EGO)
sensor: voltage signal
always "rich" (high value) –
does not switch.
Exhaust
Gas Oxygen (EGO)
sensor: signal voltage
indicates "rich" (high value)
with Thermactor air
switched upstream to the
exhaust manifold (a "lean"
air/fuel condition).
Thermactor
air flow is always upstream
(going to exhaust
49
manifold).
Thermactor
Air System unable to
bypass air (vent to
atmosphere).
Low or Mid
Temperature Switch circuit
is open when engine is hot.
Low Temperature
Vacuum Switch circuit is
open when engine is hot.
Hi or Hi/Low Vacuum
Switch circuit is always
open.
Hi or Hi/Low Vacuum
Switch circuit is always
open.
(car): Idle Tracking
Switch (ITS) – voltage does
not change from closed to
open throttle. (Closed
throttle checked during Key
On Engine Off condition.
Open throttle checked
during Engine Running
conditions.)
I-4 (truck): Idle/Decel
Vacuum Switch circuit
always open.
Wide Open Throttle
(WOT) Vacuum Switch
circuit is always open.
Wide Open Throttle
(WOT) Vacuum Switch
circuit is always open.
CROWD Vacuum
Switch circuit is always
open.
Dual Temperature
Switch circuit is always
open.
Dual Temperature
Switch circuit is always
open.
Mid Temperature
Switch circuit is always
open.
Mid Temperature
Switch circuit is always
open.
Road Load Vacuum
Switch circuit is always
open.