1 and Ground

Ω

• Disconnect white injection wire at coil ohms: hook wire to ground O ohms.
• Checks wire to #1 terminal on coil.

3 and 18

Ω

• Press accelerator pedal down fully. 0 ohms
• Checks full throttle enrichment circuit thru throttle switch.

5 and Ground

Ω

• 0 ohms
• Checks ground circuit

6 and 9

Ω

• 200-400 ohms
• Checks Air Sensor Circuit

6 and 8

Ω

• 130-260 ohms.  
• Checks Air Sensor Circuit

8 and 9

• 70-140 ohms.  
• Checks Air Sensor Circuit.

6 and 7

Ω

• 40-300 ohms.  
• Checks Air Sensor Circuit.

7 and 8

Ω

• 100-500 ohms.  
• Checks Air Sensor Circuit.

6 and 27

Ω

• Max. 2800 ohms at 68°F.  
• Checks Air Sensor Circuit.

13 and Ground

Ω

• 2100-2900 ohms at 68°F
• 270-390 at 176°F.  
• Checks Head Sensor.

14 and 10

Ω

• Approx. 7 to 9 ohms.  
• Checks Injector wire and resistor.

15 and 10

Ω

• Approx. 7 to 9 ohms.  
• Checks Injector wire and resistor.

32 and 10

Ω

• Approx. 7 to 9 ohms.  
• Checks Injector wire and resistor.

33 and 10

Ω

• Approx. 7 to 9 ohms.  
• Checks Injector wire and resistor.

16 and Ground

Ω

• 0 ohms.  
• Checks Ground Circuit.

17 and Ground

Ω

• 0 ohms.  
• Checks Ground Circuit.

34 and 37

Ω

• 34 at control unit and 37 on the double relay.  
• Approx. 30 ohms.
• Auxiliary air regulator and wires.

4 and Ground

V

• Min. 9.5 volts during cranking
• 0 volts at all other times.  
• Checks signal from starter.

10 and Ground

V

• 12 volts with key ON
• 0 volts with key OFF
• Checks voltage supply to computer.

20 and Ground

V

• 12 volts with key ON and sensor flap open (or bridge terminal 36 to terminal 39 of air flow sensor plug).  
• Checks Pump Circuit.  
• NOTE: California vehicles use terminal 28 and ground.

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