Diagnostics of electric drive forces (Chevrolet Captiva 1)

Caution! If the driver's seat motor is powered directly from the battery, touching the battery wires together may cause injury from sparking and sudden heating of the terminals. Use a fusible jumper wire and, if available, terminal test adapters. If terminal test adapters are not available, use electrical tape to reduce the possibility of jumper wires touching each other.

Diagnostic recommendations

When measuring the resistance between the terminals of the motor connectors, the resistance of the front/rear adjustment motor is approximately 1 ohm, the resistance of the front height adjustment motor is approximately 5 ohms, and the resistance of the rear height adjustment motor is approximately 9 ohms.

The power driver's seat does not work

Step	Operation	Values	Yes	No
1	Visually and physically check the correct connections on the following connectors: 4-pin connector under the driver's seat. connector to the driver's electric seat switch. Are the connectors securely attached?	-	Go to Step 3	Go to Step 2
2	Connect the connectors correctly. Try adjusting the power driver's seat. Did the power driver's seat work after the connectors were connected correctly?	-	The system is normal	Go to Step 3
3	Try adjusting the power driver's seat in each of three directions: fore/aft, front height, rear height. Is the seat adjustable in every direction?	-	Go to Step 8	Go to Step 4
4	Disconnect the four-pin connector from the body wiring harness under the driver's seat. Turn the ignition to the ON position. Check the voltage on the KRS/WH wire and the four-pin connector on the body wiring harness side. Is the voltage equal to the specified value?	11~14V	Go to Step 6	Go to Step 5
5	Restore the power supply circuit for the KRS/BEL wires and EF23. Is the renovation finished?	-	The system is normal	-
6	Using an ohmmeter, check the resistance between ground and the BLACK wire on the disconnected four-pin connector (from the body wiring harness side). Is the resistance equal to the specified value?	≈ 0 Ohm	Go to Step 8	Go to Step 7
7	Repair the open circuit in the BLACK wire between ground and the four-pin connector of the body wiring harness under the driver's seat. Is the renovation finished?	-	The system is normal	-
8	Try adjusting the power driver's seat forward and backward. Does the power driver's seat move forward and backward?	-	Go to Step 14	Go to Step 9
9	Disconnect the electrical connector from the power driver's seat switch. Move the battery closer to the power driver's seat switch so that jumper wires can reach from the battery to the switch. Connect a jumper wire between the negative battery test terminal and terminal 3 on the engine side driver's power seat switch. Carefully connect the safety jumper between the positive battery reference terminal and pin 4 on the motor-side electric driver's seat switch. These two terminals are very close to each other, and the motor may be short-circuited, so it is recommended to use a fusible wire jumper. Do not allow the battery cables to come into contact with each other. If the electric motor is in order and is not at the end of the working stroke, the electric driver's seat must move. To turn the electric motor in the opposite direction, carefully swap the terminals on the battery poles. Does the electric motor move back and forth when the electric motor is powered directly by the car's battery?	-	Go to Step 10	Go to Step 11
10	Replace the power driver's seat switch. The electric driver's seat switch can be installed backwards, so before installing the switch and the front trim of the electric driver's seat in place, check the switch and make sure that it is installed correctly. Install the front power driver's seat trim. Is the renovation finished?	-	The system is normal	-
11	Disconnect the two-pin connector that connects the 2 wires from the driver's power seat switch to the longitudinal adjustment motor. Using an ohmmeter, check the resistance of the 2 wires between the driver's electric seat switch connector and the longitudinal adjustment motor connector. Is the resistance of each wire equal to the specified value?	≈ 0 Ohm	Go to Step 13	Go to Step 12
12	Repair the open circuit in the wires at terminals 3 or 4. Is the renovation finished?	-	The system is normal	-
13	Replace the power driver seat motor assembly. Is the renovation finished?	-	The system is normal	-
14	Try adjusting the height of the front power driver's seat. Does the height adjustment in the front work?	-	Go to Step 18	Go to Step 15
15	Disconnect the electrical connector from the power driver's seat switch. Move the battery closer to the power driver's seat switch so that jumper wires can reach from the battery to the switch. Connect a jumper wire between the negative battery test terminal and terminal 5 on the engine side power driver's seat switch. Carefully connect the safety jumper between the battery's positive control terminal and pin 6 on the motor-side electric driver's seat switch. These two terminals are very close to each other, and the motor may be short-circuited, so it is recommended to use a fusible wire jumper. Do not allow the battery cables to come into contact with each other. If the electric motor is in order and is not at the end of the working stroke, the electric driver's seat must move. To make the electric motor run in the opposite direction, you must carefully reverse the connections on the battery poles. Is there up and down adjustment when the electric motor is powered directly from the car battery?	-	Go to Step 10	Go to Step 16
16	Disconnect the two-pin connector connecting the wires at terminals 5 and 6 of the driver's power seat switch to the front height adjustment motor. Using an ohmmeter, check the resistance of the wires between terminals 5 and 6 of the driver's electric seat switch connector and the front height adjustment motor connector. Is the resistance of each wire equal to the specified value?	≈ 0 Ohm	Go to Step 13	Go to Step 17
17	Repair the open circuit in the wires at terminals 5 or 6. Is the renovation finished?	-	The system is normal	-
18	Try adjusting the height of the rear power driver's seat. Does the rear height adjustment work?	-	Go to Step 22	Go to Step 19
19	Disconnect the electrical connector from the power driver's seat switch. Move the battery closer to the power driver's seat switch so that jumper wires can reach from the battery to the switch. Connect a jumper between the negative battery test terminal and terminal 7 on the engine-side driver's power seat switch. Carefully connect the fuse jumper between the positive battery control terminal and pin 8 on the motor-side electric driver's seat switch. These two terminals are very close to each other, and the motor may be short-circuited, so it is recommended to use a fusible wire jumper. Do not allow the battery cables to come into contact with each other. If the electric motor is in order and is not at the end of the working stroke, the electric driver's seat must move. To make the electric motor run in the opposite direction, you must carefully reverse the connections on the battery poles. Is there up and down adjustment when the electric motor is powered directly from the car battery?	-	Go to Step 10	Go to Step 20
20	Disconnect the two-pin connector connecting the wires at terminals 7 and 8 of the driver's power seat switch to the front height adjustment motor. Using an ohmmeter, check the resistance of the wires at terminals 7 and 8 between the driver's electric seat switch connector and the front height adjustment motor connector. Is the resistance of each wire equal to the specified value?	≈ 0 Ohm	Go to Step 13	Go to Step 21
21	Repair the open circuit in the wires at terminals 5 or 6. Is the renovation finished?	-	The system is normal	-
22	Try adjusting the tilt of the power driver's seat. Does the driver's seat recline electrically?	-	The system is normal	Go to Step 23
23	Disconnect the electrical connector from the power driver's seat switch. Move the battery closer to the power driver's seat switch so that jumper wires can reach from the battery to the switch. Connect a jumper between the negative battery test terminal and terminal 9 on the engine-side driver's power seat switch. Carefully connect the fuse jumper between the positive battery control terminal and pin 10 on the motor-side electric driver's seat switch. These two terminals are very close to each other, and the motor may be short-circuited, so it is recommended to use a fusible wire jumper. Do not allow the battery cables to come into contact with each other. If the electric motor is in order and is not at the end of the working stroke, the electric driver's seat must move. To make the electric motor run in the opposite direction, you must carefully reverse the connections on the battery poles. Is there up and down adjustment when the electric motor is powered directly from the car battery?	-	Go to Step 10	Go to Step 24
24	Disconnect the two-pin connector connecting the wires at terminals 9 and 10 of the driver's power seat switch to the front height adjustment motor. Using an ohmmeter, check the resistance of the wires at terminals 9 and 10 between the driver's electric seat switch connector and the front height adjustment motor connector. Is the resistance of each wire equal to the specified value?	≈ 0 Ohm	Go to Step 13	Go to Step 25
25	Repair the break in the wire circuit at terminals 9 or 10. Is the renovation finished?	-	The system is normal	-

The heating mat does not work

Step	Operation	Values	Yes	No
1	Check the heating mat. Does the heated mat work?	-	The system is normal	Go to Step 2
2	Check fuse F30. Is fuse F30 blown?	-	Go to Step 3	Go to Step 4
3	Check for short circuit and repair if necessary. Replace fuse F30. Is the renovation finished?	-	The system is normal	-
4	Using a voltmeter, check the voltage at terminal 5 of each (from the left and right side) mat heating switch. Does the voltmeter show the specified value?	11~14V	Go to Step 6	Go to Step 5
5	Eliminate the open circuit between fuse F30 and terminal 5 of the heating mat switch. Is the renovation finished?	-	The system is normal	-
6	Turn the ignition key to the ON position. Set the mat heating switch to the on position. Using a voltmeter, check the voltage at terminal 4 of the switch of both heating mats (left and right). Does the voltmeter show the specified value?	11~14V	Go to Step 8	Go to Step 7
7	Replace the heated mat switch. Is the renovation finished?	-	The system is normal	-
8	Turn the ignition key to the ON position. Set the mat heating switch to the on position. Using a voltmeter, check the voltage at terminal 1 of the heating mat. Does the voltmeter show the specified value?	11~14V	Go to Step 10	Go to Step 9
9	Repair the open circuit between terminal 2 of the left or right side mat heating switch and terminal 1 of the left or right side mat heating. Is the renovation finished?	-	The system is normal	-
10	Turn the ignition key to the ON position. Set the mat heating switch to the on position. Using a voltmeter, check the voltage at terminal 2 of the heating mat. Is the voltage shown equal to the specified value?	11~14V	Go to Step 12	Go to Step 11
11	Replace left or right heated mat. Is the renovation finished?	-	The system is normal	-
12	Repair the ground circuit break. Is the renovation finished?	-	The system is normal	-