Neon L4-2.0L VIN C (1997)
Crankshaft Position Sensor: Technical Service Bulletins
Cam/Crank Sensor - No Start Diagnostics
NO: 18-24-97
GROUP: Vehicle Performance
DATE: Aug. 8, 1997
SUBJECT:
No Start Diagnostics Cam/Crank Sensor
$01 and $28
MODELS:
1997 (FJ) Avenger/Sebring/Talon
1997 (GS) Chrysler Voyager (International Market)
1997 (JA) Breeze/Cirrus/Stratus
1997 (JX) Sebring Convertible
1997 (LH) Concorde/Intrepid/Vision/LHS/New Yorker
1997 (NS) Town & Country/Caravan/Voyager
1997 (PL) Neon
NOTE:
THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 2.0L DOHC/SOHC (NATURALLY ASPIRATED), 2.4L, 3.3L, 3.5L, OR 3.8L
ENGINE.
DISCUSSION:
If a vehicle exhibits a no-start due to failure of the cam or crank sensor, the opposite sensor may be reported as the DTC (i.e. bad cam sensor sets crank
sensor DTC and vice versa). The faulty sensor may generate a signal strong enough (at key "ON") to be interpreted by the controller as a legitimate
signal. Since the engine is not running, the opposite sensor will not be generating any pulses. The controller, expecting corresponding pulses from both
sensors, matures a fault for the sensor that is not generating any pulses. In this case, the good sensor is reported as faulty.
To verify which sensor is at fault, use the DRB III and select DRB III Standalone, 1994 - 1998 Diagnostics, select Engine system, select Monitor
Display, and No Start monitor. Under the No Start monitor the cam and crank sensors should display a no response or LOST on the display. If a sensor is
reporting a signal at key ON", it should be replaced.
POLICY: Information Only
