4X4 Control Unit; Continuity Exists; No Continuity Exists - Mazda 323 Workshop Manual Supplement

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TRANSFER PUMP CONTROL SYSTEM
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4x4 CONTROL UNIT (FUEL PUMP CONTROL UNIT)
Inspection
I. Remove the 4x4 control unit.
2. Disconnect the 4x4 control unit connector.
3. Check continuity between the 4x4 control unit connector
terminal M and a ground.
4. Perform the following inspection according to the measured
continuity.
Continuity exists
1. Turn the ignition switch ON.
2. Ground the 4x4 control unit terminal M with a jumper wire
and verify that the voltage at the 4x4 control unit terminal
N is ov.
3. Remove the jumper wire and verify that the voltage at the
4x4 control unit terminal N is approx. WV after approx.
10 sec.
4. If not as specified, replace 4x4 control unit.
No continuity exists
1, Turn the ignition switch ON and verify that the voltage at
the 4x4 control unit terminal N is OV.
2. Disconnect the transfer pump connector.
3. Turn the ignition switch ON and verify that the voltage at
the 4x4 control unit terminal N is approx. WV.
4. If not as specified, replace 4x4 control unit.
Replacement
I. Remove the bolts and remove the 4x4 control unit and the
bracket as an assembly.
2. Remove the 4x4 control unit from the bracket.
3. Install in the reverse order of removal.
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