Equus 3123 - GM Code Reader (1982 - 1995) Manual do Utilizador descarregar pdf (Página 3)

You Can Do It!

GM ii

Plug It In

•

Test connector usually found

under the left side of the

dashboard.

•

Set Selector switch to

ECM A-B

position.

•

Make sure ignition is off. Plug

Code Reader into test connector.

Read Fault Codes

•

Turn on ignition. DO NOT

START ENGINE.

•

Read codes from flashing

"Check Engine" or "Service

Engine Soon" light.

Pinpoint Problems

•

Locate fault code(s) in the

appropriate Service Codes List.

CHECK ENGINECHECK ENGINE

SERVICESERVICE

ENGINEENGINE

SOONSOON

triev

CODE DEFINITION

haft or Crankshaft sensor - cir

el Injector circuit is not working p

possible blown fuel injector fuse

Ignition system fault - Intermittent 7X sign

loss of 58X signal or 6X signal (Saturn)

1 Throttle position sensor (TPS) - signal voltag

high during engine idle or deceleration

22 Throttle position sensor (TPS) - signal

low during engine idle

Fuel cutoff relay circuit - open

ground

23 Manifold air temperature (M

voltage is low or high

Throttle position senso

Mixture Control (M

circuit problems

Intake Air T

Vehicle sp

problem

Read manual for a complete description of the Code Reader and

it's proper use and operation.

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