Equus 3140 - Scan Tool CanOBD2&1 Kit - Manual (Page 86)

84 CanOBD2&1
E
Ford OBD1 Systems
ADDITIONAL TESTS FOR EEC-IV SYSTEMS -WIGGLE TEST
12. The procedure can be repeated as many times as desired by press-
ing and releasing the accelerator pedal to energize and de-energize
the actuators.
13. Consult the vehicle's service repair manual for a list of actuators
(solenoids and relays) controlled by the computer that apply to the
vehicle under test, and which actuators should energize and de-
energize when performing the Output State Check. All applicable
actuators should be on when energized and off when de-energized.
14. If an actuator is not responding to the Output State Check, follow
the procedures described in the vehicle's service manual to check
computer actuator output circuit voltages and/or grounds.
15. The Output State Check will stay active as long as desired. To quit
the Output State Check, turn the ignition OFF and disconnect the
CanOBD2&1 Scan Tool from the vehicle.
Wiggle Test
Since any DTC’s from Wiggle Test results are saved in
Continuous Memory, it is suggested that you clear any DTC’s
in Continuous Memory before performing Wiggle Test (see
Erasing DTC’s on page 102 for procedures). This way you
start with a clean slate, and any faults detected during the
procedure will be related to that particular circuit tested.
Use this test to check for intermittent faults in some circuits.
Circuits Tested:
1984 & Newer - Air Charge Temp Sensor (ACT), Barometer Pressure
Sensor (BP), Engine Coolant Temp Sensor (ECT), Exhaust Gas
Oxygen Sensor (EGO), EGR Valve Position Sensor (EVP), Manifold
Absolute Pressure (MAP), Throttle Position Sensor (TP), Vane Air
Temp Sensor (VAT)
1985 & Newer - Vane Air Flow Sensor (VAF)
1986 & Newer - Pressure Feedback EGR Sensor (PFE)
1990 & Newer - Exhaust Gas Oxygen Sensor (EGO), Ignition
Diagnostic Monitor (IDM) (DIS or Dual Plug DIS only), Idle Tracking
Switch (ITS), Mass Air Flow Sensor (MAF)
ALWAYS observe safety precautions whenever working on a
vehicle. Read and follow Safety Precautions on page 3
before performing this test.
1. Locate the vehicle's Data Link Connector (DLC). See Data Link
Connector (DLC) on page 68 for connector location.
Some DLCs have a plastic cover that must be removed before
connecting the CanOBD2&1 Scan Tool cable connector.