If you are a qualified technician or experienced DIY mechanic, here is the to proceed:
For exact wire colors and high-resolution diagrams specific to your chassis number, specialized manuals like the Daihatsu Hijet English Electrical Service Manual by James Danko are highly recommended. EF Engine ECU Pinouts - DIY or TECHNICAL - Live To Dai
The ECU sends out a regulated 5V to power the sensors. A short in any sensor can pull this "hot 5V" to zero.
The alternator loom was merged into the fuel injector loom, and Pin 10 was repurposed as a 12V+ line .
Below is the verified pinout for EFSE ECUs used in Hijet models from 1990–1999. Pin numbering is viewed from the of the connector (harness side), with the clip facing up.
If your EF-SE suffers from poor response at low RPM or stalling when the A/C is on, it may be due to an incorrectly wired A/C relay or a faulty Vacuum Switching Valve (VSV) for the purge system, which helps stabilize the idle under load.
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If you are a qualified technician or experienced DIY mechanic, here is the to proceed:
For exact wire colors and high-resolution diagrams specific to your chassis number, specialized manuals like the Daihatsu Hijet English Electrical Service Manual by James Danko are highly recommended. EF Engine ECU Pinouts - DIY or TECHNICAL - Live To Dai
The ECU sends out a regulated 5V to power the sensors. A short in any sensor can pull this "hot 5V" to zero.
The alternator loom was merged into the fuel injector loom, and Pin 10 was repurposed as a 12V+ line .
Below is the verified pinout for EFSE ECUs used in Hijet models from 1990–1999. Pin numbering is viewed from the of the connector (harness side), with the clip facing up.
If your EF-SE suffers from poor response at low RPM or stalling when the A/C is on, it may be due to an incorrectly wired A/C relay or a faulty Vacuum Switching Valve (VSV) for the purge system, which helps stabilize the idle under load.