Dodge RAM TRUCK 1500 1995 Service Manual page 1200

118 GENERAL DIAGNOSIS—DIESEL ENGINE B
DIAGNOSTIC TROUBLE CODE DESCRIPTIONS—CONTINUED
Diagnostic
Trouble Code
D R B Scan Tool Display
Description of Diagnostic Trouble Cod©
Speed Control Switch Always High
37** Torque Converter Clutch Solenoid CKT
or
Trans Temp Sensor Voltage Too Low
or
Trans Temp Sensor Voltage Too High
4 1 * * Generator Field Not Switching Properly
42* Auto Shutdown Relay Control Circuit
44* Battery Temp Sensor Volts out of Limit
45* Trans Overdrive Solenoid Circuit
46** Charging System Voltage Too High
47** Charging System Voltage Too Low
53* Internal PCM Failure
or
PCM Failure SPI (Serial Peripheral Inter­
face) Communications
55* Display not shown on DRB scan tool
62* PCM Failure SRI miles not stored
63* PCM Failure EEPROM Write Denied
Speed Control switch input above the maxi­
mum acceptable voltage.
An open or shorted condition detected in the
CKT circuit.
Voltage Low at Trans Temp Sensor
Voltage High at Trans Temp Sensor
An open or shorted condition detected in the
generator field control circuit.
An open or shorted condition detected in the
auto shutdown relay circuit.
An open or shorted condition exists in the en­
gine coolant temperature sensor circuit or a
problem exists in the PCM's battery tempera­
ture voltage circuit.
An open or shorted condition exists in the
transmission overdrive solenoid circuit.
Battery voltage sense input above target
charging voltage during engine operation.
Battery voltage sense input below target
charging during engine operation. Also, no sig­
nificant change detected in battery voltage
during active test of generator output.
PCM Internal fault condition detected.
PCM Internal fault condition detected.
A DTC #55 is used to end all DTC messages.
This code indicates a completion of all DTC's
displayed on the Malfunction Indicator Lamp
(Check Engine Lamp).
Unsuccessful attempt to update SRI (service
reminder indicator) miles in the PCM EE­
PROM.
Unsuccessful attempt to write to an EEPROM
location by the PCM.
* Check Engine Lamp will not illuminate at all times if this Diagnostic Trouble Code was recorded. Cycle
Ignition key as described in manual and observe code flashed by Check Engine lamp.
** Check Engine Lamp will illuminate during engine operation if this Diagnostic Trouble Code was recorded.