Operation CHARM: Car repair manuals for everyone.
Home >> Volvo >> 1998 >> C70 Convertible L5-2.4L Turbo VIN 56 B5254T >> Repair and Diagnosis >> Cruise Control >> Testing and Inspection >> Component Tests and General Diagnostics >> Checking Disengagement Cause >> Part 2

Part 2






Checking disengagement cause (Continued)

Checking control module connector








- Ignition off.
- Check control module connector terminal 3T for contact resistance and oxidation and remedy according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Connect control module.
- Ignition on.








- Activate Diagnostic Test Mode (DTM) 2.
- ON/OFF selector switch to the ON position.
- Move gear shift from D to N or from N to D.
- Check whether response code 2-2-3 is returned.

Response code 2-2-3 returned?

Yes - Fault-tracing information

No - Replacing component

-------------------------------------------------

Fault-tracing information




- Ignition off.
- The response code was not returned because of loose connections in the control module connector.

Continue - FAULT FOUND

-------------------------------------------------

Replacing component




- Ignition off.
- Try a new control module according to Replacing control module Service and Repair.





Continue - Verification

-------------------------------------------------

Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied as follows:












- Ignition off.
- Reconnect connectors, reinstall components.
- Engine control module (ECM) connected.
- Selector switch ON.
- Ignition on.




- Move gear shift from D to N or from N to D.
- Activate Diagnostic Test Mode (DTM) 2.
- ON/OFF selector switch to the ON position.
- Move gear shift from D to N or from N to D.
- Check whether response code 2-2-3 is returned.

Location of Components, Cruise Control (Passenger Compartment - Cruise Control, Switch):





Response code 2-2-3 returned?

Yes - VERIFIED

No - VERIFICATION FAILED

------------------------

VERIFIED - FAULT FOUND

VERIFICATION FAILED - 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 response code

-------------------------------------------------





Connection of Volvo Scan Tool (ST)

Connection of Volvo ST




- Ignition off.
- Insert blue memory cassette into Volvo ST.
- Connect adapter 951 1457-5 to cable 951 1458-3.
- Connect VIDA communication lead between the adapter and the VIDA PC.

Is the data link connector (DLC) located in passenger compartment?

Yes - Connection to DLC

No - Connection to DLC

------------------------

Connection to DLC
- Connect Volvo ST cable (p/n 951 1458-3) to the adapter (p/n 951 1459-1) for use in the engine compartment.
- Connect the adapter to DLC A or B, see DLC DLC.
- Connect the adapter supply lead to battery.
- Switch on Volvo ST.





Press Continue.

Continue - DONE

------------------------

Connection to DLC
- Connect Volvo ST cable (p/n 951 1458-3) to the DLC in passenger compartment.
- Switch on Volvo ST.





Press Continue.

Continue - DONE

------------------------

DONE - Checking response code

-------------------------------------------------

FAULT FOUND - Information

FAULT-TRACING FAILED - Information

No Fault Found - Information

-------------------------------------------------

Fault-tracing response code 4-1-1





Checking ON/OFF selector switch, brake valve and clutch valve

Connection
FAULT FOUND - Checking response code for ON/OFF switch

------------------------

Checking response code for ON/OFF switch




- Ignition on.




- Activate Diagnostic Test Mode (DTM) 2.
- Move switch from ON to OFF or from OFF to ON.
- Check that the ON/OFF switch is OK by checking that response code 1-1-3 is returned.

Location of Components, Cruise Control (Passenger Compartment - Cruise Control, Switch):




Response code 1-1-3 returned?
- 1. Yes, response code 1-1-3 is returned.
- 2. No, response code 1-1-3 is not returned.
- 3. No, response code 3-1-1 is returned instead.

Select one of the alternatives above.

1 - Checking the brake valve response code

2 - Checking power supply to selector switch

3 - Checking response code 3-1-1

------------------------

Checking the brake valve response code




- Ignition on.




- Activate Diagnostic Test Mode (DTM) 2.
- ON/OFF selector switch to the ON position
- Depress brake pedal.
- Check that the brake valve is OK by checking that response code 1-1-3 is returned.




Response code 1-1-3 returned?
- 1. Yes, response code 1-1-3 is returned (manual transmission)
- 2. Yes, response code 1-1-3 is returned (automatic transmission)
- 3. No, response code 1-1-3 is not returned
- 4. No, response code 3-1-1 is returned instead

Select one of the alternatives above.

1 - Checking response code for clutch valve

2 - No Fault Found

3 - Checking the brake valve

4 - Checking response code 3-1-1

------------------------

Checking the brake valve








- Ignition off.
- Brake valve disconnected.
- Connect selector switch.
- Selector switch in OFF position.








- Connect an ohmmeter between both brake valve connecting pins.

The ohmmeter should read approx. 0 ohms with the brake pedal up and infinite resistance with the pedal depressed more than 8 mm.

OK - Checking for a short-circuit

Not OK - Brake valve adjustment

------------------------

Checking for a short-circuit




- Ignition off.




- Check cable between switch and brake valve and cable between brake valve and control module for a short-circuit to each other according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Continue - Verification

------------------------

Checking response code 3-1-1
A response code is received when the control module receives several input signals from the same component or circuit within 8 ms. The cause of the fault can be loose connections or a defective system component.





Continue - Checking response code for clutch valve

------------------------

Checking response code 3-1-1
A response code is returned when the control module receives several input signals from the same component or circuit within 8 ms. The cause of the fault can be loose connections or a defective system component.





Continue - Checking the clutch valve

------------------------

Checking response code for clutch valve




- Ignition on.




- Activate Diagnostic Test Mode (DTM) 2.
- ON/OFF selector switch to the ON position.
- Depress clutch pedal
- Check that the clutch valve is OK by checking that response code 1-1-3 is returned.




Response code 1-1-3 returned?
- 1. Yes, response code 1-1-3 is returned.
- 2. No, response code 1-1-3 is not returned.
- 3. No, response code 3-1-1 is returned instead.

Select one of the alternatives above.

1 - No Fault Found

2 - Checking the clutch valve

3 - Checking response code 3-1-1

------------------------

Checking the clutch valve








- Ignition off.
- Clutch valve disconnected.
- Selector switch in OFF position.








- Connect an ohmmeter between both clutch valve terminal pins.

The ohmmeter should read approx. 0 ohms with the clutch pedal up and infinite resistance with the pedal depressed more than 8 mm.

OK - Checking for a short-circuit

Not OK - Clutch valve adjustment

------------------------

Checking for a short-circuit




- Ignition off.




- Check cable between brake valve and clutch valve and cable between clutch valve and control module for a short-circuit to each other according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.

Continue - Verification

------------------------

Clutch valve adjustment








- Ignition off.
- Clutch valve disconnected.
- Press pedal so that it is not in contact with the valve.
- Pull piston out as far as possible and release pedal slowly.








- Connect an ohmmeter between both clutch valve terminal pins.

The ohmmeter should read approx. 0 ohms with the clutch pedal up and infinite resistance with the pedal depressed more than 8 mm.

OK - Verification

Not OK - Replacing component

------------------------

Replacing component




- Ignition off.
- Try a new clutch valve according to Replacing brake and clutch valves Service and Repair.





Continue - Verification

------------------------

Checking response code 3-1-1
A response code is returned when the control module receives several input signals from the same component or circuit within 8 ms. The cause of the fault can be loose connections or a defective system component.





Continue - Checking power supply to selector switch

------------------------

Checking power supply to selector switch








- Ignition off.
- Selector switch connected.
- Ignition on.








- Connect a voltmeter between selector switch connector terminal 2 and ground.

The voltmeter should read battery voltage.

OK - Checking selector switch

Not OK - Checking for an open-circuit

------------------------

Checking for an open-circuit




- Ignition off.








- Check the cable between fuse 11/28 and selector switch connector terminal 2 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.





Continue - Verification

------------------------

Checking selector switch








- Ignition on.
- Disconnect brake valve.
Connect a voltmeter between selector switch connector terminal 1 and ground.
Voltmeter should read battery voltage with the selector switch in the ON position and approx. 0 V with the selector switch in the OFF position.
- 1. these values are OK.
- 2. Voltmeter reads a steady battery voltage.
- 3. Voltmeter reads a steady 0 V.









Select one of the alternatives above.

1 - Checking cable between selector switch and brake valve

2 - Checking for a short-circuit

3 - Checking the selector switch connector

------------------------

Checking the selector switch connector








- Ignition off.
- Check switch connector terminals 1 and 2 for contact resistance and oxidation and remedy according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Connect selector switch.
- Ignition on.
- Selector switch ON.








- Connect a voltmeter between selector switch connector terminal 1 and ground.





The voltmeter should read battery voltage.

OK - Verification

Not OK - Replacing component

------------------------

Replacing component




- Ignition off.
- Try a new selector switch according to Replacing selector switch Replacing Selector Switch.

Location of Components, Cruise Control (Passenger Compartment - Cruise Control, Switch):





Continue - Verification

------------------------

Checking for a short-circuit




- Ignition off.








- Check the cable between selector switch connector terminal 1 and brake valve terminal 2 for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.





Continue - Verification

------------------------



pro multis · About Operation CHARM