1. DME 7.8
1709 P0197 0-37 page 1
DME 7.8
p0197
0
Printed in Germany, 2000
0-37 P0197
125 Oil temperature sensor - below limit
Diagnosis conditions
• Idle speed
• Time elapsed after engine start-up greater than 5 minutes
Possible fault cause
♦ Temperature sensor faulty
♦ Wiring harness
♦ DME control module faulty
Affected terminals
Terminal III/5 and III/17
Resistance values
60 °C 2.8 - 3.5 kΩ
90°C 1.0 - 1.3 kΩ
120°C 0.4 - 0.6 kΩ
0
Printed in Germany, 2000
Diagnosis/troubleshooting
Work instruction Display OK If not OK
1 Check temperature sensor
♦ Connect special tool 9637 to
wiring harness (DME control
module plug)
♦ Measure resistance between Pin
III/17 and Pin III/5
2.8 - 3.5 kΩ
(at 60 °C)
⇒ Step 2
Replace temperature
sensor
→ End
2 Check wiring from DME
control module to temperature
sensor for continuity
♦ Connect special tool 9637 to
wiring harness (DME control
module plug)
♦ Remove plug connection of temperature
sensor
♦ Measure resistance between
special tool 9637 Pin III/17 and
temperature sensor plug Pin 2
♦ Measure resistance between
special tool 9637 Pin III/5 and
temperature sensor plug Pin 1
0 - 5 Ω
⇒ Step 3
Repair wiring harness
→ End
3 Check wiring from DME
control module to temperature
sensor for short to
ground
♦ Connect special tool 9637 to
wiring harness (DME control
module plug)
♦ Remove plug connection of temperature
sensor
♦ Measure resistance between Pin
III/5 and ground
∞ Ω
⇒ Step 4
Repair wiring harness
→ End
4 Replace DME control module ⇒ Step 5
5 Perform adaptation ♦ Switch on the ignition
♦ Wait one minute
♦ Do not press the accelerator
♦ Switch off the ignition for at
least 10 seconds
♦ Read out the fault memory
→ End
2. 45-30 Fault code 4460
Pressure sensor
Diagnostic conditions
• Pressure sensor actual value is evaluated and displays an
implausible value
Possible cause of fault
♦ Short circuit to ground/voltage or open circuit in circuit to control
module terminals 25, 26 and 42
♦ Plug connection on stop light switch faulty
♦ Adjustment of the stop light switch not OK
♦ Wiring/ plug connection faulty
♦ Pressure sensor faulty (replace hydraulic unit)
Affected terminals
Terminals 25, 26 and 42
Diagnosis/troubleshooting
Work instruction Display OK If not OK
1 Visual inspection ♦ Check the pressure sensor plug
for damage and corrosion
⇒ Step 2 Repair pressure sensor
plug
2 Check supply voltage of
the pressure sensor for
short circuit to ground/
open circuit
♦ Switch off ignition
♦ Pull off pressure sensor plug
♦ Switch on ignition
♦ Measure voltage between pin 3
of pressure sensor plug and
ground
approx. 5 V
⇒ Step 3
♦ Display 0 V:
Short circuit to
ground/open circuit
in circuit between
PSM control module
plug pin 42 and
pressure sensor
plug pin 3
♦ Display > 11 V
Short circuit to voltage
between PSM
control module plug
pin 42 and pin 3 of
the booster pump
pressure sensor
plug, or PSM contol
module faulty
→ End
thanks sir for the replay ,,,
but ,i dont have the special tool nor the knowledge to follow these instructions ,,, for now i am really worried about knowing my oil level , so i need to fix the oil temp sensor ,,,
i took alook and the switch it seems fine to me ,,, is there any easy way to solve this problem ?
regards