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Chapter 12
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Testing Engine and Transmission Systems
To read engine and transmission codes from a 17-pin underhood connector:
• Connect the MAZDA-1 adapter to the 17-pin connector (Figure 12-2). For reading codes
manually, ground one of the following pins:
– TEN = Engine codes
– TAT = Transmission codes (most cars)
IMPORTANT:
Grounding the incorrect pin may result in vehicle damage.
FEN MEN
GND FAT FBS FAC
TAT TBS TAC
IGÐ GND
TEN B+
FSC
TSC
F/P
Figure 12-2 17-pin underhood connector and MAZDA-1 adapter
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To read codes from vehicles with 6-pin and 1-pin connectors:
• Use the MULTI-2-B + 2E adapter (Figure 12-3).
2E
2B
Figure 12-3 6-pin and 1-pin connectors and MULTI-2 adapter
IMPORTANT:
When connecting to a vehicle with the above configuration, make sure the 1-pin connector is
properly identified. Failure to identify the right connector may result in scan tool damage.
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NOTE:
Some vehicles retrieve transmission codes from the engine control module (ECM).
12.1.2 Manual Code Reading
Refer to Figure 12-4 for reading manual codes.
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