Subsection XX (DIAGNOSTIC AND FAULT CODES)
PCODE
MODULE
DESCRIPTION
CAUSE
ACTION
U0073
ECM
CAN bus off, no
messages
Damaged circuit wires or
damaged CLUSTER pins.
Disconnect MPI2 from DB connector.
Measure resistance between
DB-1 and DB-2 (Expected
value = 50 to 70 ohms).
Measure resistance
between DB-1 and ECM-B1
(Expected value < 2 ohms).
Measure resistance between DB-2
and ECM-C1 (Expected value < 2
ohms).
U0100
DPS
Lost
communication
with ECM (lost of
CAN ID’s)
Damaged CAN Bus
wires to ECM, damaged
DPS/ECM pins.
Disconnect MPI2 from DB connector.
Measure resistance between
DB-1 and DB-2 (Expected
value = 50 to 70 ohms).
Measure resistance
between DB-1 and ECM B1
(Expected value < 5 ohms).
Measure resistance between DB-2
and ECM C1 (Expected value < 5
ohms).
U0155
DPS
Lost
communication
with CLUSTER
Damage CAN Bus
wires to cluster
Damaged circuit wires or
damaged Cluster module
pins.
Measure voltage between harness
connector CL-17 and ground.
(Expected value = 11 to 13 volts)
Disconnect MPI2 from DB connector.
Measure resistance between
DB-1 and DB-2 (Expected
value = 50 to 70 ohms).
Measure resistance between DB-1
and CL-4 (Expected value < 5 ohms).
Measure resistance between DB-2
and CL-19 (Expected value < 5
ohms).
U0155
ECM
Lost
communication
with CLUSTER
Missing CLUSTER CAN ID
Module internal error
Damaged circuit wires or
damaged module pins.
Measure voltage between harness
connector CL-17 and ground.
(Expected value = 11 to 13 volts)
Disconnect MPI2 from DB connector.
Measure resistance between
DB-1 and DB-2 (Expected
value = 50 to 70 ohms).
Measure resistance
between DB-1 and ECM-B1
(Expected value < 2 ohms).
Measure resistance
between DB-2 and ECM-C1
(Expected value < 2 ohms).
Measure resistance between DB-1
and CL-19 (Expected value < 2 ohms).
Measure resistance between DB-2
and CL-18 (Expected value < 2
ohms).
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vmr2015