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ACC Recalibretion Codes ALL from S Central Board
Posted by GHP (more from GHP) on Sat, 2 Jan 2010 08:34:45
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.
1999 2002 Saab 9-3 ACC Codes
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 (DTCs) that have been detected. Calibration and the self diagnostic test should be completed in about 30 seconds.
Up to 6 DTCs may be stored at any time. The number stored will be displayed by up to 6 fan speed motor bars. All stored DTCs 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 Genl Details
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
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.
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 (DTCs) 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 (DTCs) and write them down on a piece of paper. Perform A/C-heater control panel calibration.
3) Obtain DTCs once again and make a note of any additional DTCs. See DTC table below. This procedure should be followed, since DTCs 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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