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Q501 4 Cylinder MT Application
DTC Troubleshooting Data
Version: 0.1
Date: 21-Sep-2018
Prepared By: Mithi Prasad, Sarang Kulkarni, Manish Gupta
Checked By: Yogesh Jadhav
Approved By: Satish Kumar P
Page: 66 of 1052
Copyright ©
TATA MOTORS Ltd.
This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author.
P0236-61: Negative boost pressure governor deviation (low pressure, signal calculation failure)
Overview:
DTC Description as per ISO standard
Negative boost pressure governor deviation – Signal
calculation failure.
ECU Pin Number
A38, A96, A95, A61
Customer Symptom
MIL ON
Fault Effects (On Vehicle)
-
Lamp Status (If Any)
MIL ON
Fault Detection Condition (Root cause)
Ignition ON and Engine On.
Normal Operating Condition
No Fault Code
Probable Trouble Area
1. Clogged air filter
2. Intake air restriction
3. Intake air leak
4. Exhaust system leak
5. EGR system leak
6. Vacuume hose and tubes
7. Boost pressure actuator
8. Turbocharger
Healing Condition
Write IMA code.
Clear through diagnostic tool
Ignition OFF & ON
Component Details:
A
Variable Turbine Geometry
turbocharger is also known as a
variable geometry turbocharger (VGT)
, or a
Variable Nozzle Turbine (VNT)
. A turbocharger equipped with Variable Turbine Geometry has little movable
vanes which can direct exhaust flow onto the turbine blades. The vane angles are adjusted via an actuator. The
angle of the vanes varies throughout the engine RPM range to optimize turbine behaviour.
Preliminary Checks:
1. Check whether the customer voice / view about the issue is matching with the fault effects mentioned above. If
yes,
2. go ahead with next steps. If not, check for other DTC’s presence.
3. Check whether similar complaints are earlier reported. If yes, perform the preliminary checks with respect to
earlier issue closure.
4. Check for damage of Hoses / pipes connected in the Inlet air circuit (Intercooler, Turbo charger)
5. Check for clogging of Air filter / Inlet air circuit.
Trouble Shooting: