|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
02
|
COOLANT TEMP.
|
Engine running at idle speed, operating temperature
|
85 to 110 °C
|
14, 15
|
B 12/A 11
|
|
Trouble - shooting:
|
Nominal Value:
|
Cause of Fault:
(If nominal value is not attained)
|
|
· Ignition OFF
Disconnect coolant temperature sensor plug P 30
Disconnect intake manifold pressure sensor plug P 23
· Ignition ON
|
less than - 35 °C 4.5 to 5.5 V
|
· Short
circuit in wiring harness
from: coolant temperature
sensor Ter. 2
to: ground
from: coolant temperature
sensor Ter. 2
to: coolant temperature
sensor Ter. 1
|
|
· Measure voltage:
from: wiring harness plug Ter. 1
to: ground
|
4.5 to 5.5 V
|
· Short
circuit in wiring harness
from: coolant temperature
sensor Ter. 1
to: battery +
|
|
· Measure voltage:
from: wiring harness plug Ter. 2
to: ground
|
less than 0.1 V
|
· Short
circuit in wiring harness
from: coolant
temperature sensor Ter. 2
to: battery +
|
|
· Ignition OFF
Connect intake manifold pressure sensor plug P 23
· Ignition ON
|
less than - 35° C 4.8 to 5.2 V
|
· Defect in intake
manifold pressure sensor circuit
|
|
· Ignition OFF.
· Bridge coolant
temperature sensor (P 30):
from: wiring harness plug Ter. 1
to: wiring harness plug Ter. 2
· Ignition ON
|
greater than 145° C less than
|
· Lead interruption
from: coolant temperature sensor
to: control unit K 57 Ter. B 12
from: coolant temperature sensor
to: control unit K 57 Ter. A 11
· Control unit
defective
|
|
|
If nominal values attained
|
· Coolant
temperature sensor defective
|
|
|
|
|
|
|
|
|
