Function Tests. Immobilizer 3
Checking control module communication
981 3194 Replaced by 9511495 981 3194 Replaced by 951 1495 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428
Starting the engine
Does the engine start?
Yes - Checking power supply to the data link connector (DLC)
No - Checking fuse 11C/4 in the electrical unit
-------------------------------------------------
Checking power supply to the data link connector (DLC)
- Ignition on.
- Connect Volvo Scan Tool (ST) to the data link connector (DLC) and switch on current with switch on adapter box.
Check that the display lights.
Does the display light?
Yes - Checking communication with the ABS system
No - Checking, power supply, power ground and signal ground
-------------------------------------------------
Checking, power supply, power ground and signal ground
Check Volvo Scan Tool (ST), power supply, power ground and signal ground to the data link connector (DLC).
Continue - Verification
-------------------------------------------------
Checking communication with the ABS system
- Ignition on.
- Volvo Scan Tool (ST) connected to data link connector (DLC).
Try to establish communication with the ABS system.
Can be achieved by reading off the stop (brake) lamp switch in VIDA.
Has communication with the ABS system been established?
Yes - Checking communication cable to data link connector (DLC)
No - Checking communication cable to data link connector (DLC)
-------------------------------------------------
Checking communication cable to data link connector (DLC)
- Ignition off.
- Disconnect Volvo Scan Tool (ST) from data link connector (DLC).
- Connect breakout box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 according to Connecting the breakout box Connecting the Breakout Box.
Connect an ohmmeter between data link connector (DLC) terminal 7 and breakout box terminal #49(#3).
The ohmmeter should read approximately 0 ohms.
OK - Replacing component
Not OK - Checking cable and terminals
-------------------------------------------------
Replacing component
The control module is probably defective. Try a new immobilizer control module according to Replacing the control module Replacing the Control Module and initiate according to Initiating a new immobilizer control module Initiating A New Immobilizer Control Module.
Continue - Verification
-------------------------------------------------
Checking cables and terminals.
Check the cable between junction point 23/421 and control module terminal #3 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check junction point 23/421 for loose switches according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
-------------------------------------------------
Checking communication cable to the data link connector (DLC)
- Ignition on.
- Disconnect Volvo Scan Tool (ST) from data link connector (DLC).
Connect a voltmeter between data link connector (DLC) terminal 7 and ground.
The voltmeter should read approximately 9-11 V.
OK - Checking Volvo Scan Tool (ST) and adapter box
Low - Checking for an open-circuit and short-circuit
High - Checking for a short-circuit
-------------------------------------------------
Checking Volvo Scan Tool (ST) and adapter box
The data link connector (DLC) cables are fault free.
Check Volvo Scan Tool (ST), wiring to Volvo Scan Tool (ST) and adapter box.
Continue - Verification
-------------------------------------------------
Checking for an open-circuit and short-circuit
Check cable between data link connector (DLC) terminal 7 and junction point 23/421 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check cable between data link connector (DLC) terminal 7 and the control modules connected to the cable for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
-------------------------------------------------
Checking for a short-circuit
Check cable between data link connector (DLC) terminal 7 and the control modules connected to the cable for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
-------------------------------------------------
Checking fuse 11C/4 in the central electrical unit
Check that fuse 11C/4 is intact.
Is the fuse intact?
Yes - Checking fuse 11C/8 in the central electrical unit
No - Checking for a short-circuit and replacing component
-------------------------------------------------
Checking for a short-circuit and replacing component
Check cable between fuse and control module terminal #5 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Replace fuse.
Continue - Verification
-------------------------------------------------
Checking fuse 11C/8 in the central electrical unit
Check that fuse 11C/8 is intact.
Is the fuse intact?
Yes - Checking +15 supply before the fuse
No - Checking for a short-circuit and replacing component
-------------------------------------------------
Checking for a short-circuit and replacing component
Check cable between fuse 11C/8 and control module terminal #6 and cable between fuse and other systems connected to the fuse for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
- Replace fuse.
Select "Continue" when the fault has been repaired.
Continue - Verification
-------------------------------------------------
Checking +15 supply before the fuse
- Remove fuse 11C/4 from the central electrical unit
- Ignition on.
Connect a voltmeter between the fuse holder positive side (rear socket toward the firewall) and ground.
The voltmeter should read battery voltage.
OK - Checking +15 supply after the fuse
Not OK - Checking for an open-circuit
-------------------------------------------------
Checking for an open-circuit
Check circuit between fuse number 11C/4 and battery positive terminal for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Continue - Verification
-------------------------------------------------
Checking +15 supply after the fuse
- Ignition off.
- Connect breakout box 981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 according to Connecting the breakout box Connecting the Breakout Box.
Connect an ohmmeter between the output side on the fuse holder for fuse 11C/4 (front outlet) and breakout box terminal #51 (#5).
The ohmmeter should read approximately 0 ohms.
OK - Checking +30 supply before the fuse
Not OK - Checking for an open-circuit
-------------------------------------------------
Checking for an open-circuit
Check cable between fuse 11C/4 and control module terminal #5 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
-------------------------------------------------
Checking +30 supply before the fuse
- Ignition off.
- Remove fuse 11C/8 from the central electrical unit.
Connect a voltmeter between the fuse holder positive side (rear socket toward the firewall) and ground.
The voltmeter should read battery voltage.
OK - Checking +30 supply after the fuse
Not OK - Checking for an open-circuit
-------------------------------------------------
Checking for an open-circuit
Check the circuit between battery positive terminal and fuse 11C/8 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
-------------------------------------------------
Checking +30 supply after the fuse
- Ignition off.
- Breakout box connected.
Connect an ohmmeter between the output side on the fuse holder for fuse 11C/8 (front outlet) and breakout box terminal #52 (#6).
The ohmmeter should display approximately 0 ohms.
OK - Checking control module ground lead
Not OK - Checking for an open-circuit
-------------------------------------------------
Checking for an open-circuit
Check cable between fuse 11C/8 and control module terminal #6 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
-------------------------------------------------
Checking control module ground lead
- Ignition off.
Connect an ohmmeter between breakout box terminal #54 (#8) and ground.
The ohmmeter should display approximately 0 ohms.
OK - Checking engine alternatives
Not OK - Checking for an open circuit
-------------------------------------------------
Checking engine alternatives
Check what type of type is in the car.
1. Gasoline engine with engine management system Fenix 5.2.
2. Gasoline engines with engine management system Motronic 4.4 or diesel engines with engine management system MSA 15.7.
Select one of the above options to continue.
1 - Checking resistance to ground
2 - Checking communication cable to engine control module (ECM)
-------------------------------------------------
Checking communication cable to engine control module (ECM)
- Ignition off.
- Immobilizer control module disconnected
- Engine control module (ECM) connected.
- Breakout box connected.
- Connect a voltmeter between breakout box terminal #50 (#4) and ground.
- Ignition on.
Check the value on the voltmeter during the first two seconds after switching the ignition on.
1. The value oscillates between 0-12 V for the first two seconds after ignition.
2. The value is stable low during the first two seconds after ignition.
3. The value is stable high during the first two seconds after ignition.
Select one of the above options to continue.
1 - Replacing component
2 - Checking for a short-circuit to ground
3 - Checking for a short-circuit to supply voltage
-------------------------------------------------
Checking for an open-circuit
Check the cable between control module terminal #8 and ground terminals 31/51 and ground terminal itself for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
-------------------------------------------------
Checking for a short-circuit to ground
Check the cable between immobilizer control module terminal #4 and engine control module (ECM) #B36 for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
-------------------------------------------------
Checking for a short-circuit to supply voltage
Check cable between immobilizer control module terminal #4 and engine control module (ECM) #B36for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Verification
-------------------------------------------------
Checking resistance to ground
- Ignition off.
- Control module disconnected
- Breakout box connected.
Connect an ohmmeter between breakout box terminal #50 (#4) and ground.
The ohmmeter should read infinite resistance!
OK - Verification
Not OK - Checking for a short-circuit to ground
-------------------------------------------------
Verification
Hint: After finishing the repair check that the repair is successful and that the fault is corrected as follows.
- Ignition off.
- Reconnect connectors, reinstall components.
- Connect Volvo Scan Tool (ST) to data link connector (DLC).
- Ignition on.
Check communication with immobilizer control module
This can be done by reading off the diagnostic trouble codes (DTCs) on VIDA.
Is communication established?
Yes - Repair is successful
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
-------------------------------------------------