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HOMESERVICE MANUALSPLYMOUTH1991LASER L4-1997CC 2.0L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSSPECIFICATIONSELECTRICAL SPECIFICATIONS
1991 Plymouth Laser L4-1997cc 2.0L DOHC

Electrical Specifications

1991 Plymouth Laser L4-1997cc 2.0L DOHCSECTION Electrical Specifications

IGNITION TIMING

Basic
Ignition Timing Connector grounded 5~ +/-2~ BTDC @ Curb Idle
Actual
Ignition Timing Connector ungrounded 8~ BTDC @ Curb Idle
The ECU may further advance the actual ignition timing at high altitudes.


RESISTANCE VALUES

Coolant Temperature Sensor
32 ~F (0~C) 5.9K ohms
68 ~F (20~C) 2.5K ohms
176 ~F (80~C) 0.3K ohms

EGR Control Solenoid Valve 36-44 ohms

EGR Temperature Sensor
At 50~C (122~F) 60-83K ohms
At 100~C (212~F) 11-14K ohms

Fuel Injector Coils
Turbo 2-3 ohms @ 68 ~F
Non-turbo 13-16 ohms @ 68 ~F

Fuel Pressure Control Valve Solenoid 36-46 ohms

Idle Speed Control Servo 28-33 ohms

Intake-Air Temperature Sensor
32 ~F (0~C) 6.0K ohms
68 ~F (20~C) 2.7K ohms
176 ~F (80~C) 0.4K ohms

Oxygen Sensor
Below 20~C (68~F) Approx. 15 ohms
Above 400~C (752~F) 30 ohms or more

Purge Control Solenoid Valve 36-44 ohms

Throttle Position Sensor 3.5-6.5K ohms

OUTPUT VOLTAGE
Oxygen Sensor (Lean - Rich) 0.1 - 0.9 Volts
Throttle Position Sensor Regulating Voltage 0.48-0.52 Volts at Curb Idle

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.