Volkswagen CJDA Workshop Manual page 53

Indicated on display
Implausible signal
00279/P0117
Coolant temperature
sender -G62-
Signal too low
00280/P0118
Coolant temperature
sender -G62-
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
Possible cause of fault Possible effects
◆ Open circuit or line
short-circuit
◆ -G62- defective
◆ Wiring open circuit or
wiring short to posi-
tive
◆ -G62- defective
Industriemotoren - Industrial Engines 2009 ▶
◆ No limitation
◆ Alternative values are
used for coolant, alter-
native values are only
used for temperature
range
◆ Bad cold start behav-
iour possible
3
Fault remedy
⇒
– -G62- Check.
"Checking coolant
temperature sender
-G62-" on page 407
– Check thermostat
⇒ P age
278, parts of
cooling system - en-
gine side
– Comparison of all
temperatures with
completely cooled
down engine and ter-
minal 15 ON / engine
OFF
– Electrical check of
sensor wires. Possibly
auxiliary heater coded
incorrectly
– Sensor signal con-
stant ⇒ check electri-
cal connection to sen-
sor
– Pull off temperature
sensor ⇒ sensor raw
voltage
– Check coolant tem-
perature sender -G62-
⇒ P age 407
– Checking thermostat
⇒ P age 278
– Pull off temperature
sensor ⇒ sensor raw
voltage in measured
value block
"CEngDsT_uRaw" ap-
prox. reference volt-
age (3.3 V) ⇒ sensor
defective
– Sensor raw voltage in
measured value block
approx. 0 V ⇒ check
wire to ECU
– Wire to ECU OK, ECU
defective
3 List of fault codes 37