REHS9183-00

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Special Instruction
Oxygen Sensor Calibration Procedure for the CT Vocational Trucks{7000}
Media Number -REHS9183-00
Publication Date -2014/04/21
Date Updated -2014/04/21
i05781758
Oxygen Sensor Calibration Procedure for the CT Vocational Trucks
{7000}
SMCS - 7000
On Highway Truck:
CT660 (S/N: TGA1-UP; TGD1-UP; TJD1-UP; TEJ1-UP; TRK1-UP; TKL1-UP; TEM1-UP; TEP1UP; TGR1-UP; TGS1-UP; TJS1-UP; TGT1-UP; TGW1-UP; TSW1-UP; TEY1-UP; TSY1-UP; TEZ1UP; TGZ1-UP)
Introduction
This Special Instruction explains the Oxygen Sensor (O2S) Calibration Procedure that must be followed when
replacing or calibrating the O2S on the CT Vocational trucks.
Parts Information
Table 1
Required Equipment
QTY
Version Number
Description
1
Build v38.1.21.201402031337
Engine Diagnostic Software
Procedure
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Illustration 1
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NOTICE
The O2S needs to be installed in the exhaust before calibrating the
sensor (Illustration 1).
Illustration 2
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1. Connect Personal Computer (PC) with engine diagnostic software. Turn Key ON, Engine OFF (KOEO).
2. Clear exhaust fumes by running the Relative Compression Test before calibrating the O2S. Disregard
Relative Compression Test results (Illustration 2).
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Illustration 3
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3. Open O2 Sensor Calibration Procedure (Illustration 3).
Illustration 4
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4. Press the Start O2 Sensor Calibration button (Illustration 4).
Note: Calibration takes about 5 minutes and 40 seconds to complete.
Illustration 5
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5. When calibration is complete, a popup message will display O2 Sensor Calibration: Test Completed,
Successful, press OK button (Illustration 5).
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Illustration 6
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6. Reset Parameters ONLY if a new O2S is installed (Illustration 6):
◦ 99520 (Set to 0)
◦ 99530 (Set to 0)
◦ 99540 (Set to 0)
◦ 99550 (Set to Normal 780 C)
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Illustration 7
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Note: Not all calibrations have the Parameters in lower part of window as described in previous Step (Illustration
7).
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Illustration 8
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