Required Equipment

REQUIRED EQUIPMENT

***UPDATED BY TSB #0172, MARCH 24, 1992

Obtain the following test equipment or an equivalent:

1. EDIS Diagnostic Cable (Mazda Special Service Tool (SST) #49 UN01 057).
2. Neon bulb type spark tester (OTC D89P-6666-A).
3. Volt/Ohm meter (VOM) [1].
4. Remote starter switch.
5. EEC-IV breakout box (SST #49 UN01 058).
6. Gap type spark tester. A spark plug with a broken side electrode is not sufficient to check for spark and may lead to incorrect results.
7. Inductive timing light.

[1] As described in TSB #0172, Ignition Pinpoint Tests described in the Mazda workshop manual and in this section require use of an "averaging" type digital volt/ohm meter. These make/model meters are accurate test instruments: Fluke 88, Fluke 20 or 70 series, etc. Some digital volt/ohm multimeters cannot be used with Ignition Pinpoint Tests because they can display incorrect voltage reading that may lead to misdiagnosis and/or unnecessary parts replacement.

To determine if your meter is compatible, perform this test procedure:

1. Using a known good Electronic Distributorless Ignition System (EDIS):
a. Install EDIS diagnostic cable (49 UN01 057).
b. Connect EEC breakout box (49 UN01 058) to cable.
2. Ensure that battery is properly charged.
3. Start engine and check that it is idling between 700 and 900 rpm.
4. Measure A/C voltage between coil drive C1 and ground. Voltage should be between 1.0 and 2.0V.
5. Measure A/C voltage between profile ignition pickup (PIP) and ground. Voltage should be between 6.0 and 8.0V.

If both of these readings are within specification, your meter is compatible and may be used to conduct pinpoint tests.