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Bosch LH-Jetronic 2.4 ECU and EZK pinout tables

I am posting these here for posterity, as jetronic.info went down some time ago, and I don't know if ipdown.net will continue hosting it forever.

ECU pinout:
3y7FAIO.png

EZK pinout:
iHc3RCe.png
egadsbgpzfm142nugget_940ToomanyVolvos

Comments

  • Do we have the equivalent for LH2.2?

    Yet to solve my LH 2.2 740T issues.
  • Do we have the equivalent for LH2.2?

    Almost.

    LH2.2-Pinout:

    1: Engine speed signal Input, Voltage, 6.5V @ cranking, >8V @ idle speed
    2: Temperature sensor, 4V @ -20C
    3: TPS signal input, 0.0 - at idle speed, Above idle speed
    4: Drive position(auto), Battery voltage - R,D,1,2,3 , P,N, and manual
    5: Signal Ground, 0.0 - Separate from power ground
    6: Mass air flow, ground, 0.0 - Separate from power ground
    7: Mass air flow, 2.0V @ Idling, 5.0V @ Full Load
    8: Mass air flow, burn-off, 4.0 - At burn-off, 0 - In other cases
    9: Power supply from main input 12V
    10: AIC Valve, 6 - 11 at idle
    11: Grounding point, 0 - Separate from power ground
    12: TPS wide open, 0V @ wide open throttle, 5V @ Idling
    13: Control signal Output, 7.1 Hz, 2.4-4.5 ms
    14: Mass air flow sensor, approx. 2
    15: Grounding point for coding, 0
    16: Raising engine idle speed, 12V for A/C engaged, 0V for A/C disengaged
    17: Pump relay, approx. 1 - Activated, battery - ignition on
    18: Main fuse box, positive Voltage, Battery voltage
    19: CHECK ENGINE light, Battery voltage - out, 1 - on
    20: Oxygen sensor - M1988, 0.6 - 1.0 - Rich, 0.0 - 0.4 - Lean, PRE-Ignition,
    21: Main relay operating circuit Output, approx. 1 - Ignition on, Battery voltage - Ignition off
    22: Oxygen sensor pulse ratio, data link connector
    23: AIC valve, 6 to 12 - Idling
    24: Load signal Output
    25: Grounding point, 0 - Separate from signal ground

    http://www.stonis-world.net/lh_ezk.html
    ToomanyVolvosALVO360
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