Page 709 - Workshop Manual - Tunland (2017)
P. 709
DIAGNOSTICS - ENGINE CONTROL SYSTEM 04-23
04
Failure code Diagnostic items (DTC definition) Trouble location
• Engine coolant temperature sensor
• The coolant temperature sensor
Engine coolant temperature - data is
connector is in poor contact and
P151 valid but below normal operating the sensor harness is open or
range - highest severity level
shorted
• ECM
• Intake manifold pressure tempera-
ture sensor
Intake Manifold 1 temperature sen- • Open circuit in harness, connector
P153 sor-Voltage is above normal or or sensor circuit
shorted to high voltage power supply • The signal circuit is open or shorted
to the power supply
• ECM
• Intake manifold pressure tempera-
ture sensor
Intake Manifold 1 temperature sen- • Signal circuit in wire harness is
P154 sor-Voltage is below normal or short circuit to the ground
shorted to high voltage power supply • Signal circuit in sensor is shorted
to the loop circuit or to the ground
• ECM
• Intake manifold pressure tempera-
ture sensor
Intake Manifold 1 temperature - data • Intake manifold pressure tempera-
P155 is valid but above normal operating ture sensor is in poor contact and
range - highest severity level the sensor harness is open or
shorted
• ECM
• Electronic throttle control actuator
Electronic throttle control actuator
• Electronic throttle control actuator
drive circuit - voltage is above normal
P175 is in poor contact and the sensor
or shorted to high voltage power
harness is open or shorted
supply
• ECM
• Electronic throttle control actuator
Electronic accelerator control actua-
• Electronic throttle control actuator
tor drive circuit - voltage is below
P176 is in poor contact and the sensor
normal or shorted to low voltage
harness is open or shorted
power supply
• ECM
• Electronic throttle control actuator
Electronic throttle control actuators - • Electronic throttle control actuator
P177 mechanical systems are not respon- is in poor contact and the sensor
sive or misaligned harness is open or shorted
• ECM
