Grfe Emission Control Service Data

Air-fuel ratio compensation system

Voltage

B22 (A1A+) - A28 (E2)

3.3 V

B23 (A2A+) - A28 (E2)

3.3 V

B30 (A1A-) - A28 (E2)

2.9 V

B31 (A2A-) - A28 (E2)

2.9 V

Fuel cut off rpm

Cut off

2,500 rpm

Return

1,400 rpm

Lead detection pump

Voltage

A23 (VC) - A28 (E2)

4.5 to 5.5 V

E22 (PPMP) - A28 (E2)

1.425 to 4.150 V

Vacuum Switching Valve No. 1

Resistance

at 20 °C (68 °F)

26 to 30 Q

Air fuel ratio sensor (Bank 1, Bank 2)

Resistance

1 (HT) - 2 (+B)

1.8 to 3.4 Q at 20°C (68°F)

1 (HT) - 4 (E1)

10 kQ or higher

Heated oxygen sensor No. 2 (Bank 1, Bank 2)

Resistance

1 (HT) - 2 (+B)

11 to 16 Q at 20°C (68°F)

Resistance

1 (HT) - 4 (E1)

10 kQ or higher

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