SSANGYONG Y200 Manual page 1167

5A-72 AUTOMATIC TRANSMISSION
DIAGNOSTIC TROUBLE CODE (DTC) P1703
Circuit Description
The Controller Area Network (CAN) connects various
control modules by using a twisted pair of wires, to
share common information. This results in a reduction
of sensors and wiring. TCM obtains the actual engine
speed and throttle position, vehicle speed and
accelerator position etc. from ECM via CAN without
any additional sensors.
The DTC P1703 sets when the engine speed signal via
CAN is out of range or not feasible: The engine speed
signal is greater than 7000 rpm or less than 0 rpm, or
the indicated engine speed is low while other signals
indicate the car is moving (i.e. the vehicle speed has
increased more than 125 rpm).
Conditions for Setting the DTC
•
Immediately upon the test indicating malfunction
as follows.
•
The engine speed signal is greater than 7000 rpm
or less than 0 rpm under the precondition that DTC
P1719 is not set.
•
The indicated engine speed is low while other signals
indicate the car is moving, i.e. the vehicle speed
has increased more than 125 rpm under the following
precondition;
- Driving gear is selected.
- The applied throttle is greater than 5 %.
- The engine speed is less than 550 rpm.
- DTCs P0706, P0707, P0708, P1704, P1719 and
1721 are not set.
ENGINE SPEED SIGNAL ERROR
Action Taken When the DTC Sets
•
Fault detection of some other signals will not pos-
sible.
Conditions for Clearing the DTC
•
The DTC will clear after 30 seconds without the fault.
•
A history DTC will clear after 40 TCM power-up
cycles with a warm transmission (>50 ° C) and
without a fault.
•
History DTCs can be cleared by using a scan tool
Diagnostic Aids
•
Inspect the wiring for poor electrical connections
at the TCM and ECM connectors. Look for possible
bent, backed out, deformed or damaged terminals.
Check for weak terminal tension as well. Also check
for chafed wires that could short to bare metal or
other wiring. Inspect for broken wire inside the
insulation.
•
If diagnosing for a possible intermittent short or
open condition, move or massage the wiring
harness while observing test equipment for a
change.
•
When ECM finds a fault on the engine speed
signals, ECM will adopt a default mode and send
the default value and trouble message to TCM via
CAN.
Test Description
The number(s) below refer to the step number(s) on
the Diagnostic Table.
3. Check if there are any DTCs related to the engine
speed sensor on the ECM side.
4. Check for a poor connection at the ECM and TCM
connectors.
YAD5A010
SSANGYONG Y200