Part 2
Signal missing (Continued)
Verification
Hint: After repair, it is necessary to check that the fault has been corrected as described below.
- Switch off ignition
- Reconnect connectors.
- Switch off all power consumers, such as interior lighting and radio.
- Use ohmmeter to measure resistance
- between #A20 (A20) on test box and battery negative terminal, and
- between #A29 (A29) on test box and battery negative terminal.
Instrument should indicate approx. 0 ohms in both cases.
OK - FAULT FOUND
Not OK -
------------------------
No Fault Found - No Fault Found
-------------------------------------------------
Connection of breakout box
Connector B
951 1351 ADAPTOR 86-PIN 951 1351 Adaptor 86-Pin 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428
Connecting up the Test box to Motronic 4.3
Is the test box connected to the control module?
Yes - FAULT FOUND
No -
------------------------
Connection of break-out box to connector B (grey)
- Switch off ignition.
- Disconnect ECM.
Note! The ECM must not be removed from the car until the main relay has interrupted the supply. This may take up to 150 seconds after the ignition has been switched off.
- Plug adapter 951 1351 ADAPTOR 86-PIN 951 1351 Adaptor 86-Pin into ECM base and connect break-out box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 to adapter.
Press Continue.
Continue -
Continue - Resume fault tracing at point of interruption.
------------------------
Checking ground terminal #B28
- Switch off ignition.
- Switch off all power consumers, such as interior lighting and radio.
- Reconnect ECM.
- Use ohmmeter to measure resistance between #28 (#B28) on break-out box and battery negative terminal.
Instrument should indicate approx. 0 ohms.
OK - Resume fault tracing at point of interruption.
No Fault Found
Not OK - Check ground terminals 31/32 and 31/33 at rear of engine and associated wiring for open-circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , and for contact resistance and oxidation as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
------------------------
Checking for open-circuit, contact resistance and oxidation
- Check ground terminals 31/32 and 31/33 at rear of engine and associated wiring for open-circuit as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , and for contact resistance and oxidation as per Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Press Continue when fault is repaired.
Continue -
------------------------
Verification
Hint: After repair, it is necessary to check that the fault has been corrected.
Perform as described below.
- Switch off ignition.
- Switch off all power consumers, such as interior lighting and radio.
- ECM connected.
- Use ohmmeter to measure resistance between #28 (#B28) on break-out box and battery negative terminal.
Instrument should indicate approx. 0 ohms.
OK - FAULT FOUND
Not OK -
------------------------
Troubleshooting Information
Information
Attempt New Test -
------------------------
No Fault Found - No Fault Found
-------------------------------------------------
Connection of breakout box
Connecting breakout box, connector A
Connecting the breakout box
Is the breakout box connected to the Motronic 4.4 connector?
Yes - No Fault Found
No - Connecting breakout box to Motronic 4.4 connector A (black)
------------------------
Connecting breakout box to Motronic 4.4 connector A (black)
- Ignition off.
- Disconnect control module.
Note! The engine control module (ECM) must not be removed from the car until the main relay has interrupted its power supply. This may take up to 150 seconds (cars with an immobilizer 245 seconds) after the ignition has been switched off.
Connect adapter 951 1351 ADAPTOR 86-PIN 951 1351 Adaptor 86-Pin to engine control module (ECM) connector and connect breakout box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 to adapter.
Continue - Checking ground terminals
------------------------
Checking ground terminals
- Ignition off.
- Switch off all equipment that takes power from the battery (courtesy lighting, radio etc).
Connect an ohmmeter between battery negative terminal and:
- #13 (#A13) on the breakout box.
- #28 (#A28) on the breakout box.
- #42 (#A42) on the breakout box.
The ohmmeter should read approximately 0 ohms for all readings.
OK - Reading is OK
Not OK - Checking for an open-circuit
------------------------
Checking for an open-circuit
- Check ground terminals 31/32 and 31/33 at rear of engine and their cables for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Check ground lead between engine and chassis for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - No Fault Found
------------------------
Reading is OK
- Return to the fault-tracing procedure where it was interrupted.
Continue - No Fault Found
------------------------
No Fault Found - No Fault Found
-------------------------------------------------
FAULT FOUND - Checking TC1, TC2 signal wiring, continued
No Fault Found - Checking TC1, TC2 signal wiring, continued
FAULT-TRACING FAILED - Checking TC1, TC2 signal wiring, continued
-------------------------------------------------
Checking TC1, TC2 signal wiring, continued
- Ignition on.
- Move gear selector to position P.
- Connect a voltmeter between ground and:
EZ129K
#32 (#B2) TC1
#33 (#B3) TC2
Fenix 5.2, Motronic 4.3 or Motronic 4.4.
#2 (#B2) TC1
#3 (#B3) TC2
- Disconnect the Volvo Scan Tool (ST).
- Activate TC1/TC2. The voltmeter reading should oscillate between:
EZ129K: approx. 0 V and 5 V
Fenix 5.2, Motronic 4.3/4.4: approx. 0 V and 0-2 under battery voltage.
Oscillation is rapid, approx. 1 second.
Does the reading oscillate?
Yes - Checking transmission control module (TCM) signal cable
No - Checking for an open-circuit
-------------------------------------------------
Checking for an open-circuit
Check cables between transmission control module (TCM):
#B2 and engine control module (ECM) #B2
#B3 and engine control module (ECM) #B3
#B4 and engine control module (ECM) #B4
for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
-------------------------------------------------
Checking transmission control module (TCM) signal cable
- Ignition on.
- Move gear selector to position P.
Activate torque limiting TC1/TC2. Read off transmission control module (TCM) status.
The status should alternate between NO/YES.
Does the status alternate?
Yes - Intermittent fault
No - Checking for an open-circuit
-------------------------------------------------
Checking for an open-circuit
Check the cable between transmission control module (TCM) #B4 and engine control module (ECM) #B4 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Select "Continue" when the fault has been repaired.
Continue - Verification
-------------------------------------------------
Verification
Verification
Hint: After repairs have been completed they must be verified as follows to ensure that the fault has been eliminated:
- Ignition off.
- Reconnect connectors, reinstall components.
- Breakout box connected to engine control module (ECM).
- Control modules connected.
- Ignition on.
- Move gear selector to position P.
Connect a voltmeter between ground and breakout box terminals:
- For EZ129K:
- #32 (#B2) TC1
- #33 (#B3) TC2
- For Fenix 5.2, Motronic 4.3 or Motronic 4.4:
- #2 (#B2) TC1
- #3 (#B3) TC2
Disconnect the Volvo Scan Tool (ST).
Activate torque limiting TC1, TC2.
The voltmeter reading should rapidly oscillate down to approx. 0 V when the signal is activated (this oscillation is rapid, approx. 1 second).
Does the signal oscillate?
Yes - Verification, continued
No - VERIFICATION FAILED
------------------------
Verification, continued
Hint: After repairs have been completed they must be verified as follows to ensure that the fault has been eliminated:
- Ignition off.
- Reconnect connectors, reinstall components.
- Ignition on.
- Move gear selector to position P.
Activate torque limiting TC1, TC2. Read off transmission control module (TCM) torque limiting acknowledgement status.
The status should alternate between NO/YES.
Does the status alternate?
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 signal cables for a short-circuit to supply voltage
-------------------------------------------------
Intermittent fault
Signal missing. Intermittent fault
Intermittent fault
- Ignition off.
- Check transmission control module (TCM) and engine control module (ECM) connectors for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check the cable between transmission control module (TCM) #B2 and engine control module (ECM) #B2 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check the cable between transmission control module (TCM) #B3 and engine control module (ECM) #B3 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check the cable between transmission control module (TCM) #B4 and engine control module (ECM) #B4 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Select "Continue" when the fault has been repaired.
Continue - Fault-tracing information
------------------------
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
------------------------
-------------------------------------------------
Attempt New Test - Checking signal cables for a short-circuit to supply voltage
-------------------------------------------------