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OSPREY- Application
DTC Troubleshooting Data
Version: 4.0
Date: 10-02-2017
Prepared by: Mithipati Prasad
Checked by: G S Raju / Senthilnathan S
Page: 499 of 654
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.
x
Visually check sensor; Replace sensor if damaged.
x
Check for back out / Damage of Pins at APM Sensor connector, EMS ECU connector. If found, perform
necessary repairs.
Trouble Shooting:
Step Checks
IF YES
IF NO
1.
Is there any rust/oxidization observed on Sensor Terminals Clean the Rust or
repair or replace
Go to Step 2
2.
Is there wiring harness electrical continuity between ECU
pins 37,78, 16 &Accelerator pedal Sensor connector pins
4,2,3.
Go to Step 3
Establish continuity
by rectifying
harness
connections as per
the circuit
schematic
3
Is there wiring harness electrical continuity between ECU
pins 38,76, 59 &Accelerator pedal Sensor connector pins
6,1,5
G to next step
Establish continuity
by rectifying
harness
connections as per
the circuit
schematic
4. Are there any pins damaged at Sensor/EMS ECU
Connector
Replace the
connector or wiring
harness
Go to step 5
5
Are there any pins backed out from the Sensor/EMS ECU
Connector
Rectify/Replace
Connectors
Go to Step 6
6
Is Sensor Supply Pin 78 / 76 Short circuited to Battery/GND
or open?
Repair the harness
as per the schematic Go to step 7
7
Is Sensor Signal Pin 37/38 Short circuited to battery/GND
or open circuited?
Repair the harness
as per the schematic Go to Step 8
8
Is sensor physically Damaged
Replace Sensor
Go to Step 9
9
Fault Still Persists?
Replace Sensor and
then Fault still
persists then Call
Hot Line
Follow the steps
again for
reconfirmation
DTC’s confirmation (checks before handing over vehicle to customer):
After rectification, ensure the following points by referring Accelerator pedal position parameter using TML diagnostic tool
before handing over to customer -
x
Accelerator pedal is not pressed - Pedal position in diagnostic tool should be less than 5%.
x
Accelerator pedal is fully pressed - Pedal position in diagnostic tool should be more than 95 %
x
Drive the vehicle on road to feel the accelerator pedal response in different vehicle speed & in different gear
conditions