Codes 514 And 532 - Any Advice?

[mbsl98]

Codes 514 and 532 popped up yesterday on my '95 855 Turbo (110K). 514 (coolant fan low speed)appears to be tied mostly to the radiator fan relay, but I can't get much info on 532. Code list says it is "power stage ignition module, group B, unknown fault". Unfortunately, I don't know what all of this means, or even what the power stage ignition control module is (or where it is). I had no luck searching because the code is only three characters and I don't know haw to search for it any other way.

Any insights? Are these two codes linked? (seems likely since they came together). I did reset, and codes have not yet returned, but I haven't gone far either.

Thanks to all,

Mike

[maxx999]

did you look in here for more info??

http://volvospeed.com/vs_forum/index.php?showtopic=47502

[AlvinL]

Hooray for codes! JK...

There's a lot related to code 5-3-2 and code 5-1-4 for cooling fan low speed fault is related to it.

Code 5-3-2 (Power Stage Group ’’B’’)

1) Check if other codes are present. If Codes 2-2-3, 2-4-5, 5-1-4, or 5-3-5 are stored, perform testing for these first. If no

other codes 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, code 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, code 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, code 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 operates on non-turbo vehicles, go to step 24). 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, code 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, code 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, code 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, code 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.

24) If intermittent fault is suspected, check main relay, IAC valve, FC relay, TC valve, and related wiring for open or short

circuits to ground or voltage. Repair as necessary.

[mbsl98]

Thanks guys,

The 532 write-up is very useful. Hopefully, it is just teh fan relay, since that is something I expected to replace as preventive maintenance in teh not too distant future anyway (as well as fuel pump relay). Both seem to have a good number of failures as they age.

What is the trick to searching here for something like a code 532? When I enter 532, or 5-3-2, I still get no hits, while I did get one hit with 514 on one search, and none on other tries with same entry??