300M, Concorde, Intrepid, LHS, 1998-2004

3.5L V6 VIN V Auto 6

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Trouble Code: P1388



Auto Shutdown Relay Control Circuit Malfunction

Possible Causes:



ASD relay control circuit is open between the relay and PCM
 
ASD relay control circuit is shorted to ground
 
ASD relay power circuit is open (test power from Fused B+)
 
ASD relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P1389



No Auto Shutdown Relay Output Voltage To PCM

Possible Causes:



ASD relay connector is damaged, loose or shorted
 
ASD relay output circuit is open between the relay and PCM
 
ASD relay power circuit is open (test power from Fused B+)
 
ASD relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P1390



Timing Belt Skipped One Tooth Or More

Possible Causes:



Camshaft timing is out of specifications
 
Valve timing is out of specifications
 

Trouble Code: P1391



CKP Or CMP Sensor Signal Intermittent

Possible Causes:



Camshaft Sensor is not installed properly
 
Engine valve timing is not within specifications
 
Perform a CKP and CMP Sensor relearn with the scan tool
 
Tone wheel or pulse ring is damaged
 

Trouble Code: P1398



Misfire Adaptive Numerator At Limit

Possible Causes:



Base engine problem (i.e., low cylinder compression)
 
CKP Sensor crankshaft target variation too large
 
CKP Sensor improperly installed or the CKP Sensor has failed
 
CKP Sensor signal circuit open or shorted (intermittent fault)
 
Tone wheel or pulse ring is damaged
 

Trouble Code: P1486



EVAP Leak Detection Monitor Pinched Hose Detected

Possible Causes:



EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose)
 
EVAP canister is clogged or full of dirt or moisture
 
EVAP ventilation solenoid is damaged or has failed
 
Purge line is loose, damaged or incorrectly routed
 
PCM has failed
 

Trouble Code: P1489



High Speed Radiator Fan Relay Circuit Malfunction

Possible Causes:



HFAN radiator relay control circuit is open or shorted to ground
 
HFAN radiator relay power circuit is open (test power to IGN)
 
HFAN radiator fan relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P1490



Low Speed Radiator Fan Relay Circuit Malfunction

Possible Causes:



LFAN radiator relay control circuit is open or shorted to ground
 
LFAN radiator relay power circuit is open (test power to IGN)
 
LFAN radiator fan relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P1491



Radiator Fan Control Relay Circuit Malfunction

Possible Causes:



Radiator fan control relay circuit is open or shorted to ground
 
Radiator fan control relay circuit is open (test power to IGN)
 
Radiator fan control relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P1492



Battery Temperature Sensor Circuit High Input

Possible Causes:



BTS signal circuit is open between the Sensor and the PCM
 
BTS ground circuit is open between the Sensor and the PCM
 
BTS (Sensor) is damaged or the PCM has failed
 

Trouble Code: P1493



Battery Temperature Sensor Circuit Low Input

Possible Causes:



BTS circuit is shorted to ground between Sensor and the PCM
 
BTS (Sensor) is damaged or has failed
 
PCM has failed
 

Trouble Code: P1494



EVAP Leak Detection Pump Switch Or Mechanical Fault

Possible Causes:



LDP switch signal circuit is open or shorted to ground
 
LDP switch power circuit is open (test power to Fused Ignition)
 
LDP vacuum hose is clogged, loose or restricted
 
LDP assembly is damaged or has failed (the switch has failed)
 

Trouble Code: P1495



Leak Detection Pump Solenoid Circuit Malfunction

Possible Causes:



LDP power supply circuit from the ignition switch is open
 
LDP solenoid control circuit is open or shorted to ground
 
LDP assembly is damaged or it has failed
 
PCM has failed
 

Trouble Code: P1496



5-Volt VREF Supply Voltage Too Low

Possible Causes:



A/C pressure Sensor has failed (a short to ground condition)
 
MAP Sensor has failed (a short to ground condition)
 
TP Sensor has failed (a short to ground condition)
 
PCM has failed
 

Trouble Code: P1498



No CCD Messages Received From The TCM

Possible Causes:



CCD data Bus circuit is open, shorted to ground or to power
 
TCM or the PCM has failed
 

Trouble Code: P1593



Speed Control Switch Stuck Operation

Possible Causes:



Intermittent speed control switch 1/2 stuck DTC
 
S/C switches or Steering Column Control Module malfunctioning
 
S/C signal circuit open or shorted ground or to battery voltage
 
S/C switch signal circuit shorted to switch return circuit
 
S/C Sensor ground open
 
PCM has failed
 

Trouble Code: P1595



Speed Control Solenoid Circuit Failure

Possible Causes:



S/C power supply circuit is open (test power from Brake switch)
 
S/C vacuum solenoid control circuit open or shorted to ground
 
S/C vent solenoid control circuit is open or shorted to ground
 
S/C vacuum or vent solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P1596



Speed Control Switch Continuous High Input

Possible Causes:



S/C On/Off switch is open
 
S/C switch (MUX switch) is open
 
S/C switch (MUX switch) is shorted to VREF or system power
 
S/C switch (MUX switch) is damaged or has failed
 
PCM has failed
 

Trouble Code: P1597



Speed Control Switch Continuous Low Input

Possible Causes:



S/C On/Off switch is shorted to ground
 
S/C switch (MUX switch) is shorted to ground
 
S/C switch (MUX switch) is damaged or has failed
 
PCM has failed
 

Trouble Code: P1598



A/C Pressure Sensor Circuit High Input

Possible Causes:



A/C pressure Sensor circuit is open or shorted to VREF (5v)
 
A/C pressure Sensor ground circuit is open
 
A/C pressure Sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1599



A/C Pressure Sensor Circuit Low Input

Possible Causes:



A/C pressure Sensor circuit is shorted to ground
 
A/C pressure Sensor power circuit is open
 
A/C pressure Sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1602



PCM Not Programmed

Possible Causes:



Program the PCM and then retest for this same trouble code
 
PCM has failed
 

Trouble Code: P1603



Powertrain Control Module Internal Dual-Port Ram Communication

Possible Causes:



Fused ignition switch output is missing (off-start-run circuit)
 
PCM is damaged or it has an internal failure
 

Trouble Code: P1604



PCM Internal Dual-Port Ram Read/Write Integrity Failure

Possible Causes:



Fused ignition switch output is missing (off-start-run circuit)
 
PCM is damaged or it has an internal failure
 

Trouble Code: P1607



Powertrain Control Module Internal Shutdown Timer Rationality

Possible Causes:



Fused ignition switch output is missing (off-start-run circuit)
 
PCM is damaged or it has an internal failure
 

Trouble Code: P1652



Serial Communication Link Malfunction

Possible Causes:



TCM cannot communicate with the Instrument Cluster (MIC)
 
TCM cannot communicate with the Powertrain Control Module
 
PCM/TCM is damaged or it has an internal failure
 

Trouble Code: P1682



Charging System Voltage Too Low

Possible Causes:



Battery positive or Fused Ignition circuit has high resistance
 
Generator drive belt out-of-adjustment or worn out
 
Generator field circuit has a high resistance condition
 
PCM has failed
 

Trouble Code: P1683



Speed Control Relay Or Driver Circuit Malfunction

Possible Causes:



S/C power supply circuit is open or shorted to ground
 
S/C dump solenoid (servo) is damaged or has failed
 
PCM has failed
 

Trouble Code: P1684



Battery Has Been Disconnected

Possible Causes:



Quick Learn procedure was performed with scan tool
 
TCM battery direct (B+) circuit is open or disconnected
 
TCM power ground circuit is open
 
PCM/TCM was disconnected or it has been replaced
 

Trouble Code: P1685



Smart Key Immobilizer Module Invalid Key

Possible Causes:



A theft attempt may have occurred.
 
Obtain the correct key and attempt to start the vehicle
 
Do a PCM Reset function to clear the code after engine startup
 

Trouble Code: P1686



No SKIM Bus Messages Received

Possible Causes:



Data Bus circuit from MIC to the PCM is damaged or it is open
 
Instrument Cluster is damaged or has failed
 
PCM unable to communicate with the Instrument Cluster
 
PCM has failed
 

Trouble Code: P1687



No Cluster Bus Messages

Possible Causes:



Data Bus circuit from SKIM to PCM is damaged or it is open
 
PCM unable to communicate with the Body Control Module
 
PCM has failed, or the SKIM is damaged or has failed
 

Trouble Code: P1694



No PCM Bus Messages

Possible Causes:



Data Bus circuit connector is damaged, open or it is shorted
 
Data Bus circuit to the PCM is damaged or it is open
 
PCM unable to communicate with the body control module
 
Intermittent wiring or connector problems exist
 
PCM has failed
 

Trouble Code: P1695



No BCM Bus Messages

Possible Causes:



Data Bus circuit from BCM to the PCM is damaged or it is open
 
BCM is damaged or has failed
 
TCM unable to communicate with the TCM
 
TCM has failed
 

Trouble Code: P1696



PCM EEPROM Write Operation Denied/Invalid

Possible Causes:



DRB or scan tool displays a "write" failure occurred
 
DRB or scan tool displays "write" refused a second time
 
DRB or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer)
 
PCM has failed
 

Trouble Code: P1697



PCM Failure (EMR/SRI Mileage Not Stored)

Possible Causes:



Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it.
 

Trouble Code: P1698



No CCD Messages Received From The TCM

Possible Causes:



CCD data Bus circuit is open, shorted to ground or to power
 
TCM or the PCM has failed
 

Trouble Code: P1716



Bus Communication Failure With The PCM

Possible Causes:



CCD data Bus circuit is open, shorted to ground or to power
 
Extremely low battery (system) voltage
 
TCM or the PCM has failed
 

Trouble Code: P1738



A/T High Temperature Operation Activated

Possible Causes:



Engine Cooling Fan System is not operating properly
 
Engine cooling fan has failed
 
ATF oil level is too high (overfilled)
 
Transmission oil cooler capacity too low, or cooler is plugged
 
TCM or the PCM has failed
 

Trouble Code: P1739



A/T Power Up Circuit At Speed

Possible Causes:



Fused Ignition power circuit is open between TCM and PCM
 
TCM Power UP circuit is open (test power from PDC or Fuse)
 
TCM Power UP circuit is grounded (test power from PDC or
 
TCM or the PCM has failed
 

 
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