Test Equipment

The following equipment is recommended for diagnosing and testing EEC system. DO NOT attempt to test this system without proper equipment. Damage to vehicle components may result if improper equipment is used.

• The Self-Test Automatic Read-Out (SUPER STAR II) diagnostic tester is recommended but not required. It is specially built for EEC systems and is used to display the 2-digit (numeric) codes programmed into control module. Aftermarket Scan tools are also available.
• Analog Volt-Ohmmeter (VOM) with 0-20V DC range can be used, as an alternative to the diagnostic tester, to read codes.
• Digital Volt-Ohmmeter (DVOM) with minimum 10-megohm input impedance
• A breakout box is required to perform certain tests on system. The test pin No. mentioned in CIRCUIT TESTS refers to test pin No. on breakout box. Once the breakout box has been installed during a test sequence, it may stay connected for the remainder of that test, unless stated otherwise. Aftermarket breakout boxes are also available.
• Vacuum gauge with 0-30 in. Hg range and resolution (units on scale) of 1 in. Hg
• Tachometer with 0-6000 RPM range, +/- 40 RPM accuracy, and a resolution of 20 RPM
• Vacuum pump with 0-30 in. Hg range
• Timing light
• Spark Tester (D81P-6666-A or ST-125) is required. A modified side electrode spark plug IS NOT sufficient for these testing procedures.
• Fuel Injection Pressure Gauge (T80L-9974-A)
• 12-volt test light (non-powered type)
• Jumper wire about 15" long