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Nexon Gasoline – EMS ECU Bosch
DTC Troubleshooting Manual
Version: 0.1
Date: 26-08-2017
Prepared By: Sunu S Babu/Yogesh Jadhav
Checked By: Yeshwant Jadhav
Approved By: Satish Kumar
Document Part No: 2921 02 224 A1736
Page: 600 of 1203
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.
P0369-1F: Camshaft Position Sensor “A” Circuit Intermittent – Circuit Intermittent
Overview:
ISO Code
P0369-1F
Customer Symptom
MIL turns ON
Fault Effects (On Vehicle)
Emission will get affected It will not effect drivability.
If error occurs in Idle - vehicle will continue to run
If error occurs during driving - vehicle will continue to run
without any restrictions
If error occurs before starting - vehicle will start with more
start time & run in limp home
Lamp Status (If Any)
MIL turn ON after 3 drive cycle
Fault Detection Condition
Disturbance of camshaft sensor due to loose contact,
interferences, oscillations. Wear in camshaft quick start(QS)
wheel, eccentrically mounted QS wheel.
Normal Operating Condition
Cam shaft Sensor sends plausible signal to EMS ECU
continuously and signal rate is within threshold.
Probable Trouble Area
Wiring Harness connections, Cam Sensor, Cam Sensor
mounting, Cam shaft damage
Healing Condition
After 3 drive cycles
Fault present deletion
1. Clear DTC Command form Scan tool
2. Stack Over Flow.
3. 40 warm up cycles.
4.ECU flashing
5. ECU Power-Fail
Component Details:
A typical Hall Effect Sensor has three wires or terminals: one for ground, one for supply or reference voltage and one
for the output signal. To produce an output signal, a Hall Effect Sensor must be supplied with a reference voltage.
When a metal/wheel passes through the air gap between the magnetic field (Magnet) and silicon chip (CAM Sensor),
it blocks the magnetic field and causes the chip’s output voltage to suddenly drop to zero else the chip's output voltage
is 4.7 Volts.
Preliminary Checks:
1. Loose/ Damaged Connections between Sensor and EMS ecu.
2. Check for back out of pins at both Sensor connector and ECU connector.
3. Check for damage of pins at both Sensor connector and ECU connector.
4. Check the continuity from Sensor connector pins to the ECU pins.
5. Physical damage to Cam target wheel.
6. Improper Air Gap between Sensor and Cam target wheel.