Dodge RAM TRUCK 1500 1995 Service Manual page 1151

B R
GENERAL DIAGNOSIS—EXCEPT DIESEL 1 4 - 6 9
DIAGNOSTIC TROUBLE CODE DESCRIPTIONS—CONTINUED
Diagnostic
Trouble Code
DRB Scan Tool Display Description of Diagnostic Trouble Code
15*
17*
2V
22*
23*
24*
25*
27*
No Vehicle Speed Sensor Signal
Engine is Cold Too Long
0 2 S Stays at Center
or
02S Shorted to Voltage
ECT Sensor Voltage Too High-
or
ECT Sensor Voltage Too Low
Intake Air Temp Sensor Voltage Low
or
Intake Air Temp Sensor Voltage High
Throttle Position Sensor Voltage High
or
Throttle Position Sensor Voltage Low
Idle Air Control Motor Circuits
Injector #1 Control Circuit
or
Injector #2 Control Circuit
or
No vehicle distance (speed) sensor signal de­
tected during road load conditions.
Engine coolant temperature remains below
normal operating temperatures during vehicle
travel (thermostat).
Neither rich or lean condition detected from
the oxygen sensor input. If equipped with dual
0 2 S sensors, the DRB scan tool will specify
left or right sensor.
Oxygen sensor input voltage maintained above
the normal operating range. If equipped with
dual 0 2 S sensors, the DRB scan tool will
specify left or right sensor.
Engine coolant temperature sensor input
above maximum acceptable voltage.
Engine coolant temperature sensor input below
minimum acceptable voltage.
Intake manifold air temperature sensor input
below the minimum acceptable voltage.
Intake manifold air temperature sensor input
above the maximum acceptable voltage.
Throttle position sensor input above the maxi­
mum acceptable voltage.
Throttle position sensor input below the mini­
mum acceptable voltage.
A shorted condition detected in one or more of
the idle air control motor circuits.
Injector #1 output driver does not respond
properly to the control signal.
Injector #2 output driver does not respond
properly to the control signal.
* 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.