Signal Missing

WARNING: Test drive cars with AWD at a speed above 20 km/h (12 mph), or lift up the front and rear suspension and remove all wheels.

NB1 Checking Other Diagnostic Trouble Codes (DTCs):





- Ignition on.
- Read diagnostic trouble codes (DTCs) in the ABS system. Are diagnostic trouble codes (DTCs) ABS-311 and ABS-312 stored?

Yes: NB2
No: NB3

NB2 Diagnostic Trouble Codes (DTCs) ABS-311 and ABS-312 Stored:
Fault-trace according appropriate ALLDATA section.

NB3 Status Check:





- Start engine.
- Test drive the car, or lift up the front suspension and remove both front wheels.

NOTE: When the rear wheels are stationary and the front wheels rotate, diagnostic trouble codes (DTCs) may be stored in the ABS system. Erase any diagnostic trouble codes (DTCs) stored in the ABS system after fault-tracing. Additionally, ensure that the front wheels are not rotating when the gear selector is moved.

- Go into scrolling values.
- Read off speed. Is the speed displayed within its permitted range?

Yes: NB11
No: NB4

NB4 Checking Engine Idle Speed:





- Engine idling.
- Go into scrolling values.
- Read off engine speed (RPM). Is idling speed over 1,500 rpm?

Yes: NB5
No: NB6

NB5 Adjusting Engine Idling Speed:
Check and remedy idling speed according to the relevant ALLDATA section.
NB6 Checking ABS Signal:





- Ignition off.
- Connect breakout box to ABS control module and check ground terminals.
- Disconnect ABS control module.
- Ignition on.
- Connect a voltmeter between # 6 and # 8 on the breakout box. The voltmeter should read approximately 6 V.

If reading is OK: NB9
If value is lower: NB7
If value is higher: NB8

NB7 Checking for an Open-Circuit or Short-circuit to Ground:





Check cable between combined instrument panel # A3 and ABS control module # 6 for an open-circuit according to ZA2 and a short-circuit to ground according to ZA3. Permanent Faults Then continue with NB10.

NB8 Checking for a Short-Circuit to Supply Voltage:
Check cable between combined instrument panel # A3 and ABS control module # 6 for a short-circuit to supply voltage according to ZA4. Permanent Faults Then continue with NB10.

N89 Fault Cause and Checking for Contact Resistance and Oxidation:
The cause of the diagnostic trouble code (DTC) has been loose connections in the ABS control module connector. Check connector for contact resistance and oxidation according to ZA5. Permanent Faults Then continue with NB10.

NB10 Verification:





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

- Ignition off.
- Reconnect connectors, reinstall components.
- Start engine.
- Test drive the car, or lift up the front suspension and remove both front wheels.

NOTE: When the rear wheels are stationary and the front wheels rotate, diagnostic trouble codes (DTCs) may be stored in the ABS system. Erase any diagnostic trouble codes (DTCs) stored in the ABS system after fault-tracing. Additionally, ensure that the front wheels are not rotating when the gear selector is moved.

- Go into scrolling values.
- Read off speed. Is the speed displayed within its permitted range?

Yes: Fault corrected
No: Fault not found

NB11 Faulty Signal, Intermittent Fault:
The cause of the diagnostic trouble code (DTC) may have been that the engine speed (RPM) has been over 1,500 rpm for at least a minute with the gear selector in neutral. Then continue with NB12.

NB12 Checking Cables and Terminals:





Check combined instrument panel connector A and ABS control module connector for loose connections according to ZB5, and contact resistance and oxidation according to ZB6. Check cable between combined instrument panel # A3 and ABS control module # 6 for an intermittent open-circuit according to ZB2. Intermittent Faults