Sensor Read Tests

Scan tool may be used to monitor a specified component operating range. Component operating range is then compared to a normal operating range to determine if component is operating properly.
Use scan tool to monitor specified component operation under specified operating condition. See SENSOR READ TESTS table.
Specified component operating range should be within specified normal operating range. See SENSOR READ TESTS table. If component operating range is not within normal operating range, perform specified Diagnostic Trouble Code (DTC) test or specified No Trouble Code (NTC) test under DIAGNOSTIC TESTS. See SENSOR READ TESTS table.

SENSOR READ TESTS

Procedure No. (Component)

Specified Operating Condition

Normal Operating Range

DTC Test No.

NTC Test No.

02 (Left Bank Upstream HO2S Volts) ⁽¹⁾

Engine Speed 4000 RPM & Suddenly Decelerated

200 Millivolts Or Less

.....

Engine Suddenly Accelerated

600-1000 Millivolts

.....

Engine Idling & Then Accelerated To 2500 RPM

⁽²⁾

.....

05 (Engine Coolant Temperature Sensor) ⁽³⁾

Coolant Temperature Is -4°F (-20°C)

-20°C

.....

Coolant Temperature Is 32°F (0°C)

0°C

.....

Coolant Temperature Is 68°F (20°C)

20°C

.....

Coolant Temperature Is 104°F (40°C)

40°C

.....

Coolant Temperature Is 176°F (80°C)

80°C

.....

07 (Throttle Position Sensor) ⁽⁴⁾

Idle Position

400 Millivolts Or More

.....

Fully Open

3800 Millivolts Or Less

.....

08 (Minimum Throttle)

Engine Idling More Than One Minute

400-1000 Millivolts

.....

10 (Battery Voltage)

Ignition On

Battery Voltage

.....

11 (MAP Sensor Reading) ⁽⁴⁾

Altitude Of Zero Feet

30 in. Hg

.....

Altitude Of 3937 Feet

26 in. Hg

.....

12 (Idle Air Control Motor)

⁽⁵⁾

Step Value Increases

.....

14 (Adaptive Fuel Factor)

⁽⁶⁾

Increases Gradually

.....

15 (Barometric Pressure) ⁽⁴⁾

Altitude Of Zero Feet

30 in. Hg

.....

Altitude Of 3937 Feet

26 in. Hg

.....

17 (Engine Speed)

Engine Idling At Normal Operating Temperature

650-850 RPM

.....

27 (Intake Air Temperature Sensor) ⁽³⁾

Intake Air Temperature Is -4°F (-20°C)

-20°C

.....

Intake Air Temperature Is 32°F (0°C)

0°C

.....

Intake Air Temperature Is 68°F (20°C)

20°C

.....

Intake Air Temperature Is 104°F (40°C)

40°C

.....

Intake Air Temperature Is 176°F (80°C)

80°C

.....

36 (Charging System Goal)

Engine Speed At 2500 RPM

Battery Voltage

3 or 4

.....

45 (Battery Temperature)

Ignition On

⁽⁷⁾

.....

47 (Right Bank Upstream HO2S Volts) ⁽¹⁾

Engine Speed At 4000 RPM & Suddenly Decelerated

200 Millivolts Or Less

.....

Engine Suddenly Accelerated

600-1000 Millivolts

.....

Engine Idling & Then Accelerated To 2500 RPM

⁽²⁾

.....

49 (Adaptive Fuel Factor)

⁽⁸⁾

Increases Gradually

.....

59 (Fuel Control Status) ⁽⁹⁾

Coolant Temperature Less Than 86°F (30°C)

Open Loop

.....

Coolant Temperature More Than 176°F (80°C)

Closed Loop

.....

63 (Left Bank Downstream HO2S Volts)

⁽¹⁰⁾

600-1000 Millivolts

.....

65 (Vehicle Speed)

Drive At Constant Speed

Actual Vehicle Speed & Speedometer Are The Same

.....

66 (Left Bank Upstream HO2S) ⁽¹⁾

Engine Speed At 4000 RPM & Suddenly Decelerated

Lean

.....

Engine Suddenly Accelerated

Rich

.....

Engine Idling

Change From Lean To Center & Then To Rich

.....

Engine Speed At 2500 RPM

Change From Lean To Center & Then To Rich

.....

69 (MAP Gauge Reading)

⁽¹¹⁾

Same As Vacuum Reading On Vacuum Gauge

.....

71 (Total Spark Advance)

Idling At Normal Operating Temp.

Approx. 10° BTDC

.....

72 (Right Bank Upstream HO2S State) ⁽¹⁾

Engine Speed At 4000 RPM & Suddenly Decelerated

Lean

.....

Engine Suddenly Accelerated

Rich

.....

Engine Idling

Change From Lean To Center & Then To Rich

.....

Engine Speed At 2500 RPM

Change From Lean To Center & Then To Rich

.....

73 (Right Bank Downstream HO2S Volts)

⁽¹⁰⁾

600-1000 Millivolts

.....

74 (Left Bank Downstream HO2S State)

⁽¹⁰⁾

Rich

.....

75 (Right Bank Downstream HO2S State)

⁽¹⁰⁾

Rich

.....

78 (Fuel Level Sensor)

Fuel Tank Full

3500-5000 Millivolts

73 Or 74

.....

Fuel Tank Empty

0-1500 Millivolts

73 Or 74

.....

79 (Fuel Level)

Fuel Tank Full

6/8-8/8

73 Or 74

.....

Fuel Tank Empty

0/8-2/8

73 Or 74

.....

81 (Left Bank Long Term Fuel Trim)

⁽⁶⁾

Increases Gradually

.....

82 (Left Bank Short Term Fuel Trim)

⁽⁶⁾

Increases & Then Returns To Original State

.....

83 (Right Bank Long Term Fuel Trim)

⁽⁸⁾

Increases Gradually

.....

84 (Right Bank Short Term Fuel Trim)

⁽⁸⁾

Increases & Then Returns To Original State

.....

87 (Calculated Load Value) ⁽¹⁾

Engine Idling

2.6-5.8%

.....

Engine At 2500 RPM

8.7-15.9%

.....

88 (Front Bank Fuel Control Status) ⁽⁹⁾

Engine Coolant Temperature At 89°F (32°C)

Open Loop

.....

Engine Coolant Temperature At 176°F (80°C)

Closed Loop

.....

⁽¹⁾	Check with engine at normal operating temperature.

⁽²⁾	Voltage should be 400 millivolts or less at idle and then change to 600-1000 millivolts when engine speed is increased to 2500 RPM.

⁽³⁾	Check with ignition on or with engine running.

⁽⁴⁾	Check with ignition on.

⁽⁵⁾	Engine idling and move A/C switch off to on, so A/C compressor operates.

⁽⁶⁾	With engine at normal operating temperature, engine speed at 2500 RPM and then disconnect connector at any injector on left bank (firewall side).

⁽⁷⁾	Temperature should be nearly the same as temperature near battery.

⁽⁸⁾	With engine at normal operating temperature, engine speed at 2500 RPM and then disconnect connector at any injector on right bank (radiator side).

⁽⁹⁾	Check with engine speed at 2500 RPM.

⁽¹⁰⁾	Check while driving vehicle at full throttle with engine speed at least 3500 RPM and transaxle in Low.

⁽¹¹⁾	Check with engine idling and at normal operating temperature. Use vacuum gauge to check vacuum at intake manifold.