cann-bus communication
© Hirschmann Rev. I 05/22/17 190154_I.DOC
12.2 E62
In case of an E62 the CU is reporting no signal from the pressure transducer. Start by checking your
cabling between CU and pressure transducer, even though it is not very likely that there is a problem
with it since the same cable carries also the signals from the cable reel and those appear to be fine.
You can verify that power is being supplied to the sensor by testing the CAN connectors per the
above pin layout. If you are sure that the sensor is being supplied, you have to replace the pressure
transducer.
12.3 E63
In case of an E63, the pressure transducer is reporting an internal problem. You cannot troubleshoot
any further, but need to replace the pressure transducer.
12.4 E64
In case of an E64, the CU is reporting no signal from the cable reel unit. Start by connecting the two
cables on the transducer block together. If an E62 occurs, the transducer block must be replaced. If
an E61 occurs, measure the cable from the transducer block to the cable reel with an Ohm-meter.
Check all pins of the CAN bus cable for continuity and cross-check for short circuits. If the continuity
check fails, the cable must be replaced. If the cable appears to be fine, next check the connector at
the cable reel. You can verify that power is being supplied to the sensor by testing the CAN
connectors per the pin layout (see E61). Replace the connector if this check fails. If the connector
checks properly, the board in the cable reel might be defective.
CAN-Bus electronics in cable reel.
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