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Home >> Volvo >> 1995 >> 850 GLT, 4D Sedan, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Engine Controls - Tests W/Codes - Turbo - MOTRONIC 4.3) >> Circuit Tests >> DTC 5-3-2 - Power State Group "B"

DTC 5-3-2 - Power State Group "B"

WARNING: This page is about a different car, the 1996 Volvo 850. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check if other DTCs are present. If DTCs 2-2-3, 2-4-5, 5-1-4, or 5-3-5 are stored, perform testing for these first. If no other DTCs are stored, go to next step.
  2. Disconnect 3 injectors. Using Volvo Scan Tool (998-8686 ) set to Diagnostic Test Mode (DTM) No. 3, verify that IAC valve operates. If IAC valve functions, go to step 11). If IAC valve does not operate, go to next step.
  3. Turn ignition off. Disconnect IAC valve. Turn ignition on. Connect voltmeter between IAC valve connector terminal No. 2 and ground. If battery voltage is present, go to next step. If battery voltage is not present, check wiring between IAC valve connector terminal No. 2 and main relay connector terminal No. 3 for an open circuit.
  4. Turn ignition off. Disconnect IAC valve connector. Connect ohmmeter between IAC valve connector terminals No. 1 and 2. Read valve. Connect ohmmeter between IAC valve connector terminals No. 2 and 3. Read valve again. If ohmmeter reads 9-14 ohms in both cases, go to next step. If ohmmeter does not read 9-14 ohms in both cases, retest using new IAC valve.
  5. Turn ignition on. Disconnect IAC valve connector. Connect voltmeter between IAC valve connector terminal No. 3 and ground. If voltmeter reads about zero ohms, go to next step. If voltmeter does not read about zero ohms, check wiring between IAC valve connector terminal No. 3 and ECM terminal A11 for a short circuit to voltage.
  6. Turn ignition off. Wait about 2 minutes. Disconnect IAC valve connector. Connect ohmmeter between IAC valve connector terminal No. 3 and ground. If ohmmeter reads 10-20 k/ohms, go to step 8). If ohmmeter reads infinite resistance, go to next step. If ohmmeter reads about zero ohms, check wiring between IAC valve connector terminal No. 3 and ECM terminal A11 for a short circuit to ground.
  7. Turn ignition off. Disconnect IAC valve connector. Ensure terminals are clean and tight. Repair as necessary. Connect ohmmeter between IAC valve connector terminal No. 3 and ground. If ohmmeter reads 10-20 k/ohms, DTC is caused by poor terminal contact. If ohmmeter does not read 10-20 k/ohms, check wiring between IAC valve connector terminal No. 3 and ECM terminal A11 for an open circuit.
  8. Turn ignition on. Disconnect IAC valve connector. Connect voltmeter between IAC valve connector terminal No. 1 and ground. If voltmeter reads about zero volts, go to next step. If voltmeter does not read about zero volts, check wiring between IAC valve connector terminal No. 1 and ECM terminal A25 for a short circuit to voltage.
  9. Turn ignition off. Wait about 2 minutes. Disconnect IAC valve connector. Connect ohmmeter between IAC valve connector terminal No. 1 and ground. If ohmmeter reads about 10-20 k/ohms, DTC is caused by poor contact in IAC valve connector. Repair as necessary. If ohmmeter reads infinite resistance, go to next step. If ohmmeter reads about zero ohms, check wiring between IAC valve connector terminal No. 1 and ECM terminal No. 5 for a short circuit to ground.
  10. Turn ignition off. Disconnect IAC valve connector. Check ECM connector terminals for oxidation or poor contact. Repair as necessary. Reconnect ECM connector. Connect ohmmeter between IAC valve connector terminal No. 1 and ground. If ohmmeter reads 10-20 k/ohms, DTC was caused by poor contact in ECM connector. If ohmmeter does not read 10-20 k/ohms, check wiring between IAC valve connector terminal No. 1 and ECM terminal A25 for an open circuit.
  11. Using Volvo Scan Tool (998-8686 ), enter Diagnostic Test Mode (DTM) No. 3 and verify engine cooling fan functions. If cooling fan operates on turbo vehicles, go to step 18). If cooling fan does not operate at all, go to next step.
  12. Turn ignition off. Disconnect Fan Control (FC) relay connector terminal "A". Turn ignition on. Connect voltmeter between FC relay connector terminal "A" and ground. If battery voltage is present, go to next step. If battery voltage is not present, check fusible link between starter motor and FC relay. If there is an open circuit in fusible link, probable cause is a short circuit to ground in the wiring.
  13. Turn ignition off. Disconnect FC relay connector terminal "A". Connect an ohmmeter between FC relay connector terminals A1 and B1. If ohmmeter reads about 80 ohms, go to next step. If ohmmeter does not read about 80 ohms, retest using new FC relay.
  14. Turn ignition on. Disconnect FC relay connector "B". Connect voltmeter between FC relay connector "B", terminal No. 1, and ground. If voltmeter reads about zero ohms, go to next step. If voltmeter does not read about zero ohms, check wiring between FC relay connector terminal B1 and ECM terminal A7 for a short circuit to voltage.
  15. Turn ignition off. Wait about 2 minutes. Disconnect FC connector "B". Connect an ohmmeter between FC relay connector "B", terminal No. 1, and ground. If ohmmeter reads 28-38 k/ohms, go to step 17). If ohmmeter reads infinite resistance, go to next step. If ohmmeter reads about zero ohms, check wiring between FC relay connector B1 and ECM terminal A7 for a short to ground.
  16. Turn ignition off. Disconnect FC relay connector "B". Disconnect ECM and clean terminals of oxidation. Reconnect ECM. Connect ohmmeter between FC relay connector "B", terminal No. 1, and ground. If ohmmeter reads 28-38 k/ohms, DTC was caused by poor contact at ECM connector. If ohmmeter does not read 28-38 k/ohms, check wiring between FC relay connector B1 and ECM terminal A7 for an open circuit.
  17. Turn ignition off. Disconnect FC relay connector terminal "B". Connect ohmmeter between FC relay connector "B", terminal No. 2, and ground. If ohmmeter reads infinite resistance, DTC was caused by poor contact in FC relay connector. If ohmmeter reads about zero ohms, check wiring between FC relay connector B2 and ECM terminal A22 for a short circuit to ground.
  18. Using Volvo Scan Tool (998-8686 ) set to Diagnostic Test Mode (DTM) No. 3, verify if TC control valve is functioning. If TC control valve functions, go to step 24). If TC control valve does not function, go to next step.
  19. Turn ignition off. Disconnect TC control valve. Turn ignition on. Connect voltmeter between TC control valve connector terminal No. 1 and ground. If voltmeter reads battery voltage, go to next step. If voltmeter does not read battery voltage, check wiring between TC control valve connector terminal No. 1 and main relay connector for an open circuit.
  20. Turn ignition off. Disconnect TC control valve. Connect ohmmeter between connector terminals No. 1 and 2. If ohmmeter reads 22-26 ohms, go to next step. If ohmmeter does not read 22-26 ohms, retest using new TC control valve.
  21. Turn ignition on. Disconnect TC control valve connector. Connect voltmeter between TC control valve connector terminal No. 2 and ground. If voltmeter reads about zero volts, go to next step. If voltmeter does not read about zero volts, check wiring between TC control valve connector terminal No. 2 and ECM terminal B41 for a short circuit to voltage.
  22. Turn ignition off. Wait about 2 minutes. Disconnect IAC valve connector. Connect an ohmmeter between TC control valve connector terminal No. 2 and ground. If ohmmeter reads 27-37 k/ohms, DTC is caused by poor contact in TC control valve connector. Repair as necessary. If ohmmeter reads infinite resistance, go to next step. If ohmmeter reads about zero ohms, check wiring between TC control valve connector terminal No. 2 and ECM terminal B41 for a short circuit to ground.
  23. Turn ignition off. Disconnect TC control valve connector. Disconnect ECM connector and ensure contacts are clean and tight. Repair as necessary. Reconnect ECM connector. Connect an ohmmeter between TC control valve connector terminal No. 2 and ground. If ohmmeter reads 27-37 k/ohms, DTC was caused by poor contact in ECM connector. If ohmmeter does not read 27-37 k/ohms, check wiring between TC control valve connector terminal No. 2 and ECM terminal B41 for an open circuit.
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