Operation CHARM: Car repair manuals for everyone.

Signal Too Low






Signal too low

Status check




- Gear selector in neutral.
- Lift up the front suspension so that both front wheels are hanging free.

Warning! In cars with AWD, lift up the car so that all wheels are hanging free.

- Ignition on.
- Go into scrolling values under engine management system.
- Spin the front wheel so that speed exceeds 2 km/h for at least 2 seconds while reading off the status of the vehicle speed.









Is a speed higher than 0 kph displayed?

Yes - Faulty signal. Intermittent fault

No - Checking for a short-circuit to ground

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Checking for a short-circuit to ground
Check cable between the combined instrument panel #A7 and engine control module (ECM) #B18 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
On cars with cruise control: Check cable between combined instrument panel #A7 and cruise control control module #8S for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
On cars with radio: Check cable between combined instrument panel #A7 and radio #7B for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
On cars with VGLA: Check cable between combined instrument panel #A7 and multi relay 2/76 #B9 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
On cars with RTI: Check cable between combined instrument panel #A7 and RTI control module #B3 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
On cars with accessories connected to #C: Check cable between combined instrument panel #C and connected accessory for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.










Continue - Verification

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Verification

Hint: After carrying out the repair check that the fault has been remedied.












- Ignition off.
- Gear selector in neutral.
- Reinstall connectors, components etc.
- Lift up the front suspension so that both front wheels are hanging free.

Warning! In cars with AWD, lift up the car so that all wheels are hanging free.

- Ignition on.
- Go into scrolling values under engine management system.
- Spin the front wheel so that speed exceeds 2 km/h for at least 2 seconds while reading off the status of the vehicle speed.









Is a speed higher than 0 kph displayed?

Yes - FAULT FOUND

No - Fault-tracing information
No Fault Found

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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

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Attempt New Test - Status check

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Faulty signal. Intermittent fault





Faulty signal. Intermittent fault

Checking cables and terminals
Check cable between combined instrument panel #A7 and engine control module (ECM) #B18 for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
On cars with cruise control: Check cable between combined instrument panel #A7 and cruise control control module #8S for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
On cars with radio: Check cable between combined instrument panel #A7 and radio #7B for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
On cars with VGLA: Check cable between combined instrument panel #A7 and multi relay 2/76 #B9 for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
On cars with RTI: Check cable between combined instrument panel #A7 and RTI control module #B3 for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
On cars with accessories connected to #C: Check cable between combined instrument panel #C and connected accessories for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.









Continue - Fault-tracing information
DONE

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Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Do you want to view the information again?

Yes - Attempt New Test

No - FAULT FOUND

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Attempt New Test - Status check

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