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These are the only ones I could find for sure. The A7 socket I'm not positive on, could be the A/C's Outside Air Temp Sensor there Under the wiper cowling on the right side. Have you had A/C problems? Anyway hope these help.
Mike
'95 850T
See previous post a little further down...
Code 4-3-3 (Rear Knock Sensor Signal) test system using a new knock sensor.
Code 3-1-1 (Vehicle Speed Sensor) How's your speedometer working? If it's Ok just reset the DTC and see if it comes back.
Code 3-1-1 (Vehicle Speed Sensor Signal)
1) Test drive vehicle. Using Volvo Scan Tool (998-8686), read
off VSS signal. If speed is zero MPH, fault is permanent. Go to next
step. If speed is okay, fault is intermittent. Go to step 6).
2) Test drive vehicle and ensure speedometer functions. If
speedometer shows zero MPH, speedometer or one of its components is
defective. If speedometer is okay, go to
next step.
3) Turn ignition on. Check if Code 1-3-1 is stored. If Code
1-3-1 is stored, check wiring between instrument cluster connector
terminal A7 and ECM terminal B18 for a short circuit to voltage. If
Code 1-3-1 is not stored, go to next step.
4) Connect breakout box between ECM and ECM connector. Shift
transmission to Neutral. Raise and support front of vehicle. Turn
ignition on. Connect voltmeter between breakout box pins No. 18 and
28. Rotate front wheels. If voltmeter reading varies between .5-5
volts, source of code is poor contact in ECM connector. Repair as
necessary. If voltmeter shows a steady reading of about zero volts,
check wiring between instrument cluster connector terminal A7 and ECM
terminal B18 for a short circuit to ground. If voltmeter shows a
steady reading of greater than 5 volts, on VDO speedometer, check
wiring between instrument cluster connector terminal A7 and ECM
terminal B18 for an open circuit.
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