Operation CHARM: Car repair manuals for everyone.

Computers and Control Systems

IGNITION TIMING

Basic 5~ +/- 2~ BTDC @ Curb Idle
Actual 8~ BTDC @ Curb Idle


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
Below 50~C (122~F) 60-83k ohms
Above 100~C (212~F) 11-14k ohms
Fuel Injector Coils 13-16 ohms @ 68 ~F
Idle Speed Control Motor 5-35 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
Motor Position Sensor 4-6K 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