ACC Recalibretion Codes ALL from S Central Board - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com


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ACC Recalibretion Codes ALL from S Central Board
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Posted by GHP (more from GHP) on Sat, 2 Jan 2010 08:34:45 Share Post by Email
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Thanks to Flashheart!
Since there are so many posts and questions regarding these fine items, I have transposed the workshop manual for everyone. Funnily it does not list some codes I have seen here.

Please note - there are differences between the 900NG and the 9-3. Key feature - the 900 NG displays the # of faults and you need a scan tool to retreive them. The 9-3 ACC will display the codes themselves.

Enjoy!

1999 – 2002 Saab 9-3 ACC Codes

Calibration:


Automatic ACC control module calibration occurs when the ignition has been turned off after ACC control module replacement or when power supply has been interrupted within 10 minutes of the ignition being turned off. Calibration is required when a stepping motor has been replaced or position has been changed.

To manually recalibrate the ACC control module, start the engine and allow to idle. Simultaneously press the AUTO and OFF buttons. ACC display panel will flash one time, indicating that calibration and self diagnostic test has started. During the calibration “0” will be displayed or any Diagnostic Trouble Codes (DTC’s) that have been detected. Calibration and the self diagnostic test should be completed in about 30 seconds.

Up to 6 DTC’s may be stored at any time. The number stored will be displayed by up to 6 fan speed motor bars. All stored DTC’s are cleared at the start and while the calibration and self diagnostic test are in progress. When completed the number of faults will be displayed on the ACC control module display through the fan speed bar method. The initial code should be displayed first along with the bars.

ACC Scan Gen’l Details

Code Code
---------------------------------------------------------------------------------------------------

01 – B1605 – ACC Module – Internal control module failure

02 - B1350 - Cabin Temp Sensor - Open circuit or short to battery or short to ground

03 - B1340 - Solar Sensor - Open circuit or short to battery or short to ground

04 - B1347 - Mixed-Air Temp Sensor - Open circuit or short to battery or short to ground

06 - B2492 - Mixed-Air Damper Stepping Motor - Open circuit or short to battery or short to ground

07 - B2496 - Mixed-Air Damper Stepping Motor - Jammed Damper

08 - B2495 - Mixed-Air Damper Stepping Motor - Loose Damper

12 - B2400 - Air Distribution Stepping Motor - Open circuit or short to ground

13 - B2406 - Air Distribution Stepping Motor - Jammed Damper

14 - B2405 - Air Distribution Stepping Motor - Loose Damper

20 - B2425 - Blower Motor Control Voltage - Open circuit or short to battery or short to ground

21 - B2410 - Recirculation Damper Motor - Open circuit or short to battery or short to ground

23 - B2945 - Sensor Ground - Open circuit or short to battery



1994 – 1998 Saab 900 ACC Calibration and Codes

Calibration:


If the battery has been disconnected or discharged, the A/C heater control panel and stepper motors must be calibrated. Perform calibration by simultaneously pressing AUTO and OFF push buttons.

The A/C-heater control panel display will flash once to confirm that it has been calibrated. During calibration, the display shows a zero (0) or the number of faults found (1-5). After calibration, the A/C-heater control panel display again shows the selected temperature. Calibration and self test takes about 30 seconds.


Fault Diagnosis:


1) Ensure SDA Mk II is connected to Saab ISAT Scan Tester. Connect ISAT scan tester to the data link connector (under left side of dash, next to steering column).

2) During diagnosis, ignition switch should be in normal driving position. Obtain readouts and make note of stored Diagnostic Trouble Codes (DTC’s) and write them down on a piece of paper before disconnecting battery and any control module.

3) If communication cannot be established between ISAT and athe A/C-heater control panel (control module), check that ALL fuses are not blown and that they are supplied with current. Check wiring harness between A/C-heater control panel and data link connector. Ensure data link connectors pins are not damaged.

4) Ensure ignition switch is off before disconnecting components, control module or connectors. DO NOT remove the control modules signal ground without first disconnecting the battery as this could damage the control module.

5) Check power and ground circuits to control module. Ensure component connector pins are not damaged. Never switch from volts to ohms, or vice versa, on multimeter with first having unplugged the tester leads.

6) Reattach connectors. Start and drive vehicle to check whether the fault or faults persists. Voltage values are proportional to battery voltage, and should only be used as a guide.

7) All control modules are sensitive to electrostatic discharge and could, if handled incorrectly, be damaged. Avoid disconnecting or removing the control module unless absolutely necessary. After checking functions, always clear fault memory with CLEAR FAULT CODES command.


Retrieving the Trouble Codes:

1) Connect the ISAT Scan Tester to the data link connector (under left side of dash, next to steering column). Clear any manual programming from A/C-heater control panel (control module) and then road test vehicle.

2) Obtain Diagnostic Trouble Codes (DTC’s) and write them down on a piece of paper. Perform A/C-heater control panel calibration.

3) Obtain DTC’s once again and make a note of any additional DTC’s. See DTC table below. This procedure should be followed, since DTC’s B2403 and B2493 can only be detected in connection with calibration

4) Diagnose and test A/C-heater system using relevant trouble codes. After servicing vehicle perform A/C-heater control panel calibration.

5) Repeat as necessary. J


B1343 - Solar Sensor (open/shorted circuit)

B1347 – Blend Air Sensor (shorted to ground)

B1348 – Blend Air Sensor (open/shorted circuit)

B1352 – Cabin Temp Sensor (shorted to ground)

B1353 – Cabin Temp Sensor (open/shorted circuit)

B1355 – Cabin Temp Sensor & Vent Motor Power Supply (shorted to ground)

B1360 – A/C-heater Control Panel Push Buttons

B1493 – A/C Output Signal (shorted to ground)

B1498 – Heated Rear Window (shorted to ground)

B1515 – Sensor Ground (shorted to battery + voltage)

B1605 – Control Module / ACC (internal fault)

B1675 – Air Distribution Motor Faulty

B1676 – Recirculation Motor Faulty

B1677 – Heater Flap Motor Faulty

B2402 – Air Dist. Stepper Motor (shorted to ground)

B2403 – Air Dist. Stepper Motor (open circuit)

B2404 – Air Dist. Stepper Motor (shorted circuit)

B2405 – Air Dist. Damper Loose

B2406 – Air Dist. Flap Jammed

B2413 – Recirculation Motor (open circuit)

B2414 – Recirculation Motor (shorted circuit)

B2422 – Fan Test Voltage (shorted to ground)

B2423 – Fan Test Voltage (shorted to battery + voltage)

B2426 – Fan Control Voltage (overloaded circuit)

B2427 – Fan Control Voltage (shorted to ground)

B2428 – Fan Control Voltage (shorted to battery + voltage)

B2492 – Blend Air Stepper Motor (shorted to ground)

B2493 – Blend Air Stepper Motor (open circuit)

B2494 – Blend Air Stepper Motor (shorted circuit)

B2495 – Blend Air Damper Loose

B2496 – Blend Air Damper Jammed



posted by 99.232.145...

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