Equus 3145 - Digital Ford Code Reader (1981 - 1995) - Manual (Page 68)

Retrieving Codes
RETRIEVING FAULT CODES FROM MCU SYSTEMS
RETRIEVING FAULT CODES FROM MCU SYSTEMS
Preliminary Procedures
The following "Preliminary Procedures" MUST be
performed before the actual KOEO and/or KOER Self
Tests are performed.
• Always observe safety precautions before and during
testing process.
• Fix any known mechanical problem before this test.
• A voltmeter is required to perform this test.
1. Idle engine until it reaches normal operating temperature.
2. While engine is running, use a voltmeter to check voltages
between the choke cap and engine ground. For battery
powered choke, voltage should be approximately 12 volts.
For alternator powered choke, voltage should be
approximately 7.5 volts.
3. Turn ignition off.
4. If your vehicle has one or more of the following
configurations perform the Set-Up Procedures as
described below:
65 Chapter 4
TEST
CODE CONDITION FAULT CODE DEFINITION
656 C Converter Clutch Control (CCC) continuous
slip error
659 R High vehicle speed in park indication
662 O Shift solenoid 2 circuit
667 C, O Transmission range sensor circuit below
maximum voltage
668 C, O Transmission range sensor circuit above
maximum voltage
675 O, R Transmission range sensor circuit voltage
out of range
675 C Cluster center control circuit failed
dynamic response test
998 R Operating in failure mode
NO CODES Unable to initiate Self-Test or unable to
output Self-Test codes
* Test condition not available
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