Operation CHARM: Car repair manuals for everyone.

Emission Control Systems


Base Ignition Timing 12°BTDC At Idle (1)
Advance Ignition Timing 20°BTDC At Idle (1)

EGR Gas Temperature Sensor Resistance (2)
At 50°C (122°F) 69.4 - 88.5K Ohms
At 100°C (212°F) 11.9 - 14.4K Ohms
At 150°C (302°F) 2.8 - 3.6K Ohms

Main OS Heater Resistance
At 20°C (68°F) 5.1 - 6.3 Ohms

1. Refer to adjustment procedure.
2. California Only.