Spicer TPCS Troubleshooting Guide - Manual (Page 29)

26
Service Codes
Group: 5C! (Codes 33, 34)
PCU Sensor (Codes 33, 34)
With ignition off, inspect socket connections at
ECU connector and at PCU sensor 3-way.
Are
connections
mechanically and
electrically
sound?
Repair
conditions as
necessary.
Is there
continuity?
Disconnect the ECU connector
and the PCU sensor connector.
Inspect and
repair faulty
harness.
Check for short circuits between each
pair of PCU sensor harness pins:
A and B
B and C
C and A
Are any
shorted?
Reconnect ECU connector.
Check voltage between PCU sensor harness
pin B and ground with ignition switch on.
Is voltage
between 4.9 and
5.1V?
Check harness inside PCU
cover for continuity:
A to A
B to B
C to C
Is there
continuity?
Repair mini-harness inside cover.
Are any
shorted?
Check harness inside
PCU cover for shorts:
A to B
B to C
C to A
Replace PCU sensor.
Is the active
fault cleared?
Complete
Replace ECU.
Note: ECUs are not a typical cause of
problems. If an ECU is replaced, the
system should be carefully rechecked
to make sure the problem has been
fixed and does not reoccur.
Check continuity between the
following points:
PCU Sensor ECU Harness
Harness Pin Connector Pin
C H1
B H2
A H3
Repair mini-harness inside cover.
Yes
Yes
Yes
No
No
Replace ECU.
Note: ECUs are not a typical cause of
problems. If an ECU is replaced, the
system should be carefully rechecked
to make sure the problem has been
fixed and does not reoccur.
Yes
Yes
No
Yes
No
Yes
No
No
No
Inspect and
repair faulty
harness.