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PGM-FI test harness??

3.4K views 4 replies 5 participants last post by  bairdandrew77  
#1 ·
Ive got 2 codes on my ECU (1 & 20), so im going through the steps for code 20. Its wanting me to connect the "PGM-FI test harness" between the ECU and connector. Is there a work around for these test harness? Just found one online for $157

Thanks

1989 Honda CRX SI
1.6L
All original with rust
 
#2 ·
The test harness is not required. It just makes many measuring tasks easier.

For measurements with the ECU disconnected you can measure at the ECU harness connector. Just be careful not to damage the terminal sockets by jamming too large of a test probe in the socket.

When the measurement is made with the ECU connected you can back porbe the connector. A straightened out paper clip makes a good probe that you can slide into the back of the connector next to the wire of interest. It may take a little wiggling to get the probe in good contact with the terminal.

Mike