Computers and Control Systems

TIMING:

Base Ignition Timing 10° BTDC At Idle [1]
Advance Ignition Timing 12 - 21° BTDC At Idle [1]

[1] Refer to ADJUSTMENT PROCEDURES.

RESISTANCE:

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

[2] California Only.

Oxygen Sensor Heater:
At 68°F (20°C) 5.1 - 6.3 Ohms

Idle Speed Control (ISC) Valve:
Between terminals B+ and RSC or RS0 17.7 - 23.9 Ohms

T-VIS VSV:
Resistance 33 - 39 Ohms

EGR VSV:
Resistance 33 - 39 Ohms

Turbocharging Pressure VSV:
Resistance 24 - 30 Ohms

Ignition Coil:
Primary (cold) 0.40 - 0.50 Ohms
Secondary (cold) 10.0 - 14.0K Ohms

Distributor Signal Generator (Pickup Coil):
Between terminals G1 and G- 140 - 180 Ohms
Between terminals G2 and G- 140 - 180 Ohms
Between terminals Ne- and G- 180 - 220 Ohms



Coolant Temperature Sensor:
At -4°F (-20°C) 10 - 20 kOhms
At 32°F (0°C) 4 - 7 kOhms
At 68°F (20°C) 2 - 3 kOhms
At 104°F (40°C) 0.9 - 1.3 kOhms
At 140°F (60°C) 0.4 - 0.7 kOhms
At 176°F (80°C) 0.2 - 0.4 kOhms

Throttle Position Sensor:

CLEARANCE BETWEEN BETWEEN TERMINALS RESISTANCE
STOP SCREW AND LEVER

0in. (0mm) VTA - E2 0.2 - 0.8 kOhms
0.020in. (0.50mm) IDL - E2 2.3 kOhms or less
0.028in. (0.70mm) IDL - E2 Infinity
Full Open VTA - E2 3.3 - 10 kOhms
-- VC - E2 3 - 8.3 kOhms

Air Flow Meter:

BETWEEN TERMINALS RESISTANCE

VS - E2 200 - 600 Ohms
(Measuring plate fully closed)

20 - 1200 Ohms
(Measuring plate fully open)

VC - E2 200 - 400 Ohms



THA - E2

At -4°F (-20°C) 10 - 20 kOhms
At 32°F (0°C) 4 - 7 kOhms
At 68°F (20°C) 2 - 3 kOhms
At 104°F (40°C) 0.9 - 1.3 kOhms
At 140°F (60°C) 0.4 - 0.7 kOhms