DongFeng S30 - Page 227

Sunroof
15-7
 Check Tilt operation button.
Operating voltage
is not within
normal range
1. Shortly press Tilt button and check whether the
voltage of the 1
st
and 2
nd
pins is in the range of
effective working voltage at the moment of sunroof
movement. If not:
 Replace or charge battery;
 Check the potential drop of harness and connector.
ECU fault 1. Replace ECU.
In system-defined
stop position
1. Check whether sunroof is in full tilt position where
sunroof doesn’t respond to operation.
Slide signal fail
1. Press and hold Slide button and check whether the
voltage of the 6
th
pin of ECU is at high level (battery
voltage). If not:
 Check the signal circuit of Slide operation;
 Check Slide operation button.
Operating voltage
is not within
normal range
1. Shortly press Slide button and check whether the
voltage of the 1
st
and 2
nd
pins is in the range of
effective working voltage at the moment of sunroof
movement. If not:
 Replace or charge battery;
 Check the potential drop of harness and connector.
No response to
Slide button or
partially
nonresponsive
ECU fault 1. Replace ECU.
Slide button
operation is
allowed in full
close position.
Nonresponsive to
any button
operation in full
close position
Operating voltage
is not within
normal range
1. Check whether the voltage of the 1
st
and 2
nd
pins is in
the range of effective working voltage at the moment
of sunroof movement. If not:
 Replace or charge battery;
 Check the potential drop of harness and connector.
Hall sensor is
broken
1. Check whether the output of Hall sensor is normal
square wave. If not:
 Replace Hall sensor and then execute “Initialize
Operation”.
Interrupted
movement of
sunroof in Slide
and/or Tilt button
operation
Operating voltage
is not within
normal range
1. Check whether the voltage of the 1
st
and 2
nd
pins of
ECU is in the range of effective working voltage. If
not:
 Charge battery or replace the battery with an
acceptable battery;
 Check sunroof power supply line and harness;
 Perform initialization operation after voltage is
recovered into the range of effective working
voltage.
Sunroof is auto-off
without any
operation
Igniter single fault
1. Check whether the voltage of 4
th
pin of ECU is at low
level (0V voltage). If not:
 Check whether igniter is in effective position;
 Check the status signal circuit and harness of igniter.
Sunroof is auto-off
immediately after
turning ignition key
to OFF position
Short sunroof
auto-off time
1. Check whether the voltage of 4
th
pin of ECU is at low
level (0V voltage). If so:
 Check whether the voltage of the 5
th
or 6
th
pin of ECU
is in the range of effective working voltage (battery
voltage). If not, make sure that its voltage is in the
range of effective working voltage;
Sunroof is not
auto-off after
turning ignition key
to OFF position
Igniter single fail
1. Check whether the voltage of 4
th
pin of ECU is at low
level (0V voltage). If not:
 Check whether igniter is in effective position;
 Check the status signal circuit and harness of igniter.
2. Check whether the voltage of 4
th
pin of ECU is at low