Signal Too Low

Status Message

NOTE: To get the correct status message carry out the following before reading the diagnostic trouble code (DTC).

- Ignition ON.
- Set mode selector to E.
- Wait for about 30 seconds.
- Set mode selector to S.
- Wait for about 30 seconds.
- Read off the status of the diagnostic trouble code.
- Is the diagnostic trouble code status PERMANENT?

Yes:
- Proceed to: Checking The Mode Selector Controls section below.

No:
- Proceed to: Intermittent Fault section below.





Checking The Mode Selector Controls
- Ignition OFF.
- Remove mode selector from center console.
- Check that the mode selector control moves easily and does not stick.
- Ensure that the W button does not stick in the depressed position.
- Shake the driving mode selector and check there are no loose parts in the switch.
- Is the mode selector OK?

Yes:
- Proceed to: Checking Mode Selector Resistance section below.

No:
- Proceed to: Replacing Component section below.





Replacing Component
- Ignition OFF.
- Mode selector removed.
- Try a new mode selector.
- Proceed to: Verification section below.





Checking Mode Selector Resistance
- Ignition OFF.
- Disconnect mode selector.
- Connect an ohmmeter between the mode selector connector terminal:

- 2 and 3 with the mode selector in position E.
- 1 and 3 with the mode selector in position S.
- 1 and 2 with the W button up.

- The ohmmeter should read infinite resistance for all readings.

If reading is OK:
- Proceed to: Checking Signal Wiring MS1 section below.

If reading is incorrect:
- Proceed to: Replacing Component section above.





Checking Signal Wiring MS1
- Ignition OFF.
- Connect mode selector.
- Ignition ON.
- Read off mode selector sensor signal MS1.
- Set mode selector to E.
- Does the mode selector sensor signal MS1 display HIGH?

Yes:
- Proceed to: Checking For A Short-circuit section below.

No:
- Proceed to: Checking For A Short-circuit 2 sections below.





Checking For A Short-circuit
- Ignition ON.
- Check cable between mode selector connector terminal 1 and transmission control module (TCM) # 33 for a short-circuit to ground.
- Proceed to: Verification section below.





Checking For A Short-circuit
- Ignition ON.
- Mode selector connected.
- Check cable between mode selector connector terminal 2 and transmission control module # 6 for a short circuit to ground.
- Proceed to: Verification section below.





Verification
After repairs have been completed they must be verified as follows to ensure that the fault has been eliminated:

- Ignition OFF.
- Reconnect the connectors, reinstall components etc.
- Ignition ON.
- Select scrolling values.
- Read off the mode selector position.

- Check positions E, S and W.
- Are all positions OK?

Yes:
- Fault corrected.

No:
- Proceed to: Fault-tracing Information section below.

Fault-tracing Information
The verification result shows that the fault persists.

- Do you want to exit fault-tracing?

Yes:
- Fault not corrected.

No:
- Proceed to: Status Message section above.





Intermittent Fault
- Ensure that the W button does not stick in the depressed position.
- Check cable between mode selector connector terminal 2 and transmission control module # 16 for an intermittent short-circuit.
- Check cable between mode selector connector terminal 1 and transmission control module # 33 for an intermittent open-circuit.
- Proceed to: Fault-tracing Information section below.

Fault-tracing Information
For intermittent faults fault-tracing is not followed by a verification because the fault is not present at this moment.

- Do you want to repeat fault-tracing?

Yes:
- Proceed to: Status Message section above.

No:
- Operation done.