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U1412-IMPLAUSIBLE VEHICLE SPEED SIGNAL RECEIVED
For a complete wiring diagramRefer to Section 8W.
When Monitored:
Ignition on.
Set Condition:
The ECM gets an implausible signal over the CAN C circuit from the ABS Module. The circuit is continuously
monitored. One Trip fault.
Possible Causes
CAN C BUS CIRCUIT SHORTED
CAN C BUS CIRCUIT OPEN
ABS MODULE
ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Theory of Operation
The ABS Module sends vehicle speed information over the CAN C Bus circuit tothe ECM.
Diagnostic Test
1.ACTIVE DTC
Ignition on, engine not running.
With a scan tool, read DTCs.
Is the U1412-IMPLAUSIBLE VEHICLE SPEED SIGNAL RECEIVED active at this time?
Ye s>>
Go To 2
No>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
2.U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT IS ACTIVE
Continue reading DTCs.
Is the U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT ACTIVE at this time?
Ye s>>
Refer to the Diagnostic Procedure for the U0001-NO COMMUNICATION ON THE CANCBUSCIR-
CUIT.
No>>
Go To 3
3.ABS MODULE IS ACTIVE ON THE CAN C BUS
With the scan tool, select ECU View.
Verify that the ABS Module active on the bus.
Is the ABS Module active on the bus?
Ye s>>
Go To 4
No>>
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for No
Response diagnostic procedures.
Perform BODY VERIFICATION TEST – VER 1.
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4.ACTIVE DTCS IN THE FCM
With the scan tool, select ECU View and select FCM (TIPM).
With the scan tool, read active DTCs.
Is the U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT ACTIVE in the FCM at this time?
Ye s>>
Replace the ABS Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
Page 907 of 5267
U0141-LOST COMMUNICATION WITH ECU
For a complete wiring diagramRefer to Section 8W.
Page 908 of 5267
When Monitored:
Ignition run time is greater than 1 second. Battery voltage between 9 and 16volts.
Set Condition:
The ECM doesn’t receive a ECU message over the CAN C circuit for 7 consecutive seconds. The circuit is
continuously monitored. One Trip fault.
Possible Causes
CAN C BUS OPEN OR SHORTED CONDITION
ECU
ECM
Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diagnostic
procedures and for further possible causes.
Diagnostic Test
1.ACTIVE DTC
Ignition on, engine not running.
With a scan tool, read ECM DTCs.
Is the DTC active at this time?
Ye s>>
Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING for diag-
nostic procedures and for further possible causes.
No>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
Page 909 of 5267

U1421-IMPLAUSIBLE IGNITION KEY OFF TIME RECEIVED
For a complete wiring diagramRefer to Section 8W.
When Monitored:
Ignition on.
Set Condition:
The fuel volume message the ECM is receiving is implausible. The circuit iscontinuously monitored. One Trip
fault.
Possible Causes
CAN B OPEN OR SHORTED
CLUSTER MODULE
FCM (TOTALLY INTEGRATED POWER MODULE)
ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Theory of Operation
The Totally Integrated Power Module (TIPM) isn’t receiving a fuel volume signal over CAN B from the Cluster Mod-
ule. The TIPM has to send the PCM a fuel volume signal over CAN C. The signal the TIPM sends over CAN C is
implausible.
Diagnostic Test
1.ACTIVE DTC
Ignition on, engine not running.
With a scan tool read DTCs.
Is the DTC active at this time?
Ye s>>
Go To 2
No>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
2.CAN B BUS HARDWARE DTCS ALSO ACTIVE
With a scan tool check for DTCs in the TIPM.
Are any CAN B Hardware related DTCs active at this time?
Ye s>>
(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the
appropriate diagnostic procedures.
Perform BODY VERIFICATION TEST – VER 1.
No>>
Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
Page 910 of 5267
Page 911 of 5267

page page
ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10
DIAGNOSIS AND TESTING
PRE-DIAGNOSTIC TROUBLESHOOTING
PROCEDURE............................. 1606
INTERMITTENT CONDITION ............... 1607
P0031-O2 SENSOR 1/1 HEATER CIRCUIT
LOW..................................... 1608
P0032-O2 SENSOR 1/1 HEATER CIRCUIT
HIGH.................................... 1612
P0051-O2 SENSOR 2/1 HEATER CIRCUIT
LOW..................................... 1616
P0052-O2 SENSOR 2/1 HEATER CIRCUIT
HIGH.................................... 1620
P0071-AMBIENT/BATTERY TEMP SENSOR
PERFORMANCE.......................... 1624
P0107-MAP SENSOR VOLTAGE TOO LOW . 1629
P0108–MAP SENSOR VOLTAGE TOO HIGH . 1634
P0111-INTAKE AIR TEMP PERFORMANCE . . 1639
P0112-INTAKE AIR TEMP SENSOR
VOLTAGE TOO LOW...................... 1643
P0113-INTAKE AIR TEMPERATURE
SENSOR CIRCUIT HIGH.................. 1647
P0117-ENGINE COOLANT TEMPERATURE
SENSOR CIRCUIT LOW................... 1651
P0118-ENGINE COOLANT TEMP SENSOR
VOLTAGE TOO HIGH...................... 1655
P0121-TP SENSOR VOLTAGE DOES NOT
AGREE WITH MAP........................ 1659
P0122-THROTTLE POSITION SENSOR #1
VOLTAGE TOO LOW...................... 1667
P0123-THROTTLE POSITION SENSOR #1
VOLTAGE TOO HIGH...................... 1672
P0125-INSUFFICIENT COOLANT TEMP FOR
CLOSED-LOOP FUEL CONTROL........... 1677
P0131-O2 SENSOR 1/1 CIRCUIT VOLTAGE
TOO LOW................................ 1680
P0132-O2 SENSOR 1/1 CIRCUIT VOLTAGE
TOO HIGH............................... 1683
P0133-O2 SENSOR 1/1 SLOW RESPONSE . 1688
P0135-O2 SENSOR 1/1 HEATER
PERFORMANCE.......................... 1691
P0136-O2 SENSOR 1/2 HEATER CIRCUIT
MALFUNCTION........................... 1694
P0137-O2 SENSOR 1/2 CIRCUIT LOW ..... 1697
P0138-O2 SENSOR 1/2 CIRCUIT HIGH ..... 1701
P0139-O2 SENSOR 1/2 SLOW RESPONSE . 1706
P0141-O2 SENSOR 1/2 HEATER
PERFORMANCE.......................... 1709
P0151-O2 SENSOR 2/1 CIRCUIT LOW ..... 1713
P0152-O2 SENSOR 2/1 CIRCUIT HIGH ..... 1716
P0153-O2 SENSOR 2/1 SLOW RESPONSE . 1721P0155-O2 SENSOR 2/1 HEATER
PERFORMANCE.......................... 1724
P0157-O2 SENSOR 2/2 CIRCUIT VOLTAGE
TOO LOW................................ 1728
P0158-O2 SENSOR 2/2 CIRCUIT VOLTAGE
TOO HIGH............................... 1732
P0159-O2 SENSOR 2/2 SLOW RESPONSE . 1737
P0161-O2 SENSOR 2/2 HEATER
PERFORMANCE.......................... 1740
P0171-FUEL SYSTEM 1/1 LEAN ........... 1744
P0172-FUEL SYSTEM 1/1 RICH ............ 1751
P0174-FUEL SYSTEM 2/1 LEAN ........... 1757
P0175-FUEL SYSTEM 2/1 RICH ............ 1764
P0197-ENGINE OIL TEMPERATURE
SENSOR VOLTAGE TOO LOW............. 1770
P0198-ENGINE OIL TEMPERATURE
SENSOR VOLTAGE TOO HIGH............ 1773
P0201-FUEL INJECTOR 1 CIRCUIT ........ 1777
P0202-FUEL INJECTOR 2 CIRCUIT ........ 1781
P0203-FUEL INJECTOR 3 CIRCUIT ........ 1785
P0204-FUEL INJECTOR 4 CIRCUIT ........ 1789
P0205-FUEL INJECTOR 5 CIRCUIT ........ 1793
P0206-FUEL INJECTOR 6 CIRCUIT ........ 1797
P0207-FUEL INJECTOR 7 CIRCUIT ........ 1801
P0208-FUEL INJECTOR 8 CIRCUIT ........ 1805
P0209-FUEL INJECTOR 9 CIRCUIT ........ 1809
P0210-FUEL INJECTOR 10 CIRCUIT....... 1813
P0300-MULTIPLE CYLINDER MISFIRE ..... 1817
P0301-CYLINDER #1 MISFIRE ............. 1823
P0302-CYLINDER #2 MISFIRE ............. 1832
P0303-CYLINDER #3 MISFIRE ............. 1841
P0304-CYLINDER #4 MISFIRE ............. 1850
P0305-CYLINDER #5 MISFIRE ............. 1859
P0306-CYLINDER #6 MISFIRE ............. 1868
P0307-CYLINDER #7 MISFIRE ............. 1877
P0308-CYLINDER #8 MISFIRE ............. 1886
P0309-CYLINDER #9 MISFIRE ............. 1895
P0310-CYLINDER #10 MISFIRE ............ 1904
P0320–NO CANK REFERENCE SIGNAL AT
PCM..................................... 1913
P0325-KNOCK SENSOR 1 CIRCUIT ........ 1921
P0330-KNOCK SENSOR 2 CIRCUIT ........ 1925
P0340-CAMSHAFT POSITION SENSOR
CIRCUIT................................. 1929
P0352-IGNITION COIL #2 PRIMARY
CIRCUIT................................. 1936
P0353-IGNITION COIL #3 PRIMARY
CIRCUIT................................. 1940
P0354-IGNITION COIL #4 PRIMARY
CIRCUIT................................. 1944
Page 912 of 5267

P0355-IGNITION COIL #5 PRIMARY
CIRCUIT................................. 1948
P0420-1/1 CATALYTIC CONVERTER
EFFICIENCY............................. 1952
P0432-2/1 CATALYTIC CONVERTER
EFFICIENCY............................. 1955
P0441-EVAP PURGE FLOW MONITOR . . . . . 1958
P0442-EVAP LEAK MONITOR MEDIUM
(0.040) LEAK DETECTED.................. 1962
P0443-EVAP PURGE SOLENOID CIRCUIT . . 1968
P0455-EVAP LEAK MONITOR LARGE LEAK
DETECTED............................... 1972
P0460-FUEL LEVEL SENDING UNIT NO
CHANGE OVER MILES.................... 1978
P0462-FUEL LEVEL SENDING UNIT VOLTS
TOO LOW................................ 1979
P0463-FUEL LEVEL SENSOR 1 CIRCUIT
HIGH.................................... 1982
P0500-NO VEHICLE SPEED SIGNAL ....... 1986
P0505-IDLE AIR CONTROL MOTOR
CIRCUITS................................ 1989
P0513-INVALID SKREEM KEY ............. 1994
P0522-OIL PRESSURE CIRCUIT LOW ...... 1996
P0523-OIL PRESSURE CIRCUIT HIGH ..... 2000
P0601-PCM INTERNAL CONTROLLER
FAILURE................................. 2003
P0622-GENERATOR FIELD NOT
SWITCHING PROPERLY.................. 2004
P0645-A/C CLUTCH RELAY CIRCUIT . . ..... 2008
P0801-REVERSE GEAR LOCKOUT CIRCUIT
OPEN OR SHORTED...................... 2012
P1195-O2 SENSOR 1/1 SLOW DURING
CATALYST MONITOR..................... 2016
P1196-O2 SENSOR 2/1 SLOW DURING
CATALYST MONITOR..................... 2019
P126B-ASD CONTROL CIRCUIT 2 LOW .... 2022
P126C-ASD CONTROL CIRCUIT 2 HIGH .... 2026
P126D-ASD CONTROL CIRCUIT 2 OPEN . . . 2030
P126E-ASD CONTROL CIRCUIT
OVERCURRENT.......................... 2034
P1272-A/C CLUTCH CONTROL CIRCUIT 2
LOW..................................... 2038
P1273-A/C CLUTCH CONTROL CIRCUIT 2
HIGH.................................... 2041
P1274-A/C CLUTCH CONTROL CIRCUIT 2
OPEN.................................... 2045
P1275-A/C CLUTCH CONTROL CIRCUIT 2
OVERCURRENT.......................... 2049
P1277-STARTER CONTROL CIRCUIT 2 LOW
(TIPM)................................... 2052
P1278-STARTER CONTROL CIRCUIT 2
HIGH (TIPM).............................. 2055
P1279-STARTER CONTROL CIRCUIT 2
OPEN (TIPM)............................. 2058
P127A-STARTER CONTROL CIRCUIT 2
OVERCURRENT.......................... 2061
P127C-FUEL PUMP CONTROL CIRCUIT 2
LOW..................................... 2064P127D-FUEL PUMP CONTROL CIRCUIT 2
HIGH.................................... 2067
P127E-FUEL PUMP CONTROL CIRCUIT 2
OPEN (TIPM)............................. 2071
P0127F-FUEL PUMP CONTROL CIRCUIT 2
OVERCURRENT (TIPM)................... 2075
P1281-ENGINE IS COLD TOO LONG ....... 2078
P1282-FUEL PUMP/SYSTEM RELAY
CONTROL CIRCUIT....................... 2079
P1294-TARGET IDLE NOT REACHED ...... 2082
P1296-NO 5-VOLTS TO MAP SENSOR ..... 2085
P1297-NO CHANGE IN MAP FROM START
TO RUN.................................. 2089
P1388-AUTO SHUTDOWN RELAY CONTROL
CIRCUIT................................. 2094
P1389-NO ASD RELAY OUTPUT VOLTAGE
AT P C M.................................. 2097
P1391-INTERMITTENT LOSS OF CMP OR
CKP
..................................... 2100
P1398-MIS-FIRE ADAPTIVE NUMERATOR
AT L I M I T................................. 2104
P1486-EVAP LEAK MONITOR PINCHED
HOSE FOUND............................ 2106
P1492-AMBIENT/BATTERY TEMPERATURE
SENSOR VOLTAGE TOO HIGH............. 2110
P1493-AMBIENT/BATTERY TEMPERATURE
SENSOR VOLTAGE TOO LOW............. 2114
P1494-LEAK DETECTION PUMP SWITCH
OR MECHANICAL FAULT.................. 2117
P1495-LEAK DETECTION PUMP SOLENOID
CIRCUIT................................. 2121
P1499-HYDRAULIC FAN SOLENOID
CIRCUIT................................. 2126
P1594-CHARGING SYSTEM VOLTAGE TOO
HIGH.................................... 2130
P1598-A/C PRESSURE SENSOR VOLTAGE
TOO HIGH............................... 2133
P1599-A/C PRESSURE SENSOR VOLTAGE
TOO LOW................................ 2137
P1682-CHARGING SYSTEM VOLTAGE TOO
LOW..................................... 2141
P1687-NO CLUSTER BUS MESSAGE ...... 2146
P1695-BUS MESSAGE FROM BODY
CONTROL MODULE...................... 2148
P1696-PCM FAILURE EEPROM WRITE
DENIED.................................. 2151
*BRAKE SWITCH SENSE STATUS DOES
NOT CHANGE ON THE SCAN TOOL....... 2153
*CANNOT SHIFT INTO REVERSE .......... 2157
*CHECKING A/C SYSTEM OPERATION
WITH NO DTCS.......................... 2159
*CHECKING CHARGING SYSTEM
OPERATION WITH NO DTCS.............. 2163
*CHECKING RADIATOR FAN OPERATION . . 2167
*CHECKING THE PCM POWER AND
GROUNDS............................... 2169
B2277–CAN GATEWAY INTERNAL
(GATEWAY).............................. 2172
U0001–CAN C BUS CIRCUIT (GATEWAY) . . . 2172