Signal Too High
Signal too high
Checking components and wiring
Check relay 2/142 for damage.
Check the signal cable between relay 2/142 terminal #2 and connector terminal #1 (thermostat 8/85) on the diesel filter. Check the signal cable between connector terminal #2 (thermostat 8/85) on the diesel filter and rear electronic module terminal #D16 (#B16). Check for a short-circuit to supply voltage.
Hint: See the wiring diagram for the cable routing.
Remedy as necessary.
Other information:
- To fault-trace wiring and terminals, see Checking wiring and terminals Checking Wiring and Terminals
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- For information about signals, see Signal specification Signal Specification
- To access and replace the relay, see Relay/fuse box cargo compartment/Rear electronic module (REM), replacing Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- See the wiring diagram for the cable routing.
Continue - Verification
-------------------------------------------------
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reinstall the connectors, components etc.
This type of fault cannot be accurately verified electronically. Check that the connectors and components are installed and, if possible, that the symptoms are no longer present.
Is everything correctly installed?
Yes - Troubleshooting procedure complete
No - Fault-tracing information
-------------------------------------------------
Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - Exit Fault-tracing
No - Attempt New Test
------------------------
Attempt New Test - Checking components and wiring
-------------------------------------------------