Attention! If the driver's seat motor is powered directly from the battery, contact between the battery wires could result in injury from sparking and sudden heating of the terminals. Fusible jumper wire and, if available, terminal test adapters should be used. If terminal test adapters are not available, electrical tape should be used to reduce the possibility of jumper contact.
Diagnostic Recommendations
When measuring the resistance between the terminals of the motor connectors, the forward/backward adjustment motor resistance is approximately 1 Ω, the front height adjustment motor resistance is approximately 5 Ω, and the rear height adjustment motor resistance is approximately 9 Ω.
Power driver's seat does not work
Step | Operation | Values | Yes | No |
1 |
Visually and physically check for proper connections at the following connectors:
Are the connectors firmly attached?
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-
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Go to Step 3
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Go to Step 2
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2 |
Did the power driver's seat work after correctly connecting the connectors?
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-
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System OK
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Go to Step 3
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3 |
Attempt to adjust the power driver's seat in each of the three directions: forward/backward, front height, rear height.
Is the seat adjustable in every direction?
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-
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Go to Step 8
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Go to Step 4
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4 |
Is the voltage equal to the specified value?
|
11~14V
|
Go to Step 6
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Go to Step 5
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5 |
Repair the power supply circuit for RED/White wire and EF23.
Is the repair finished?
|
-
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System OK
|
-
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6 |
Using an ohmmeter, check the resistance between ground and the BLACK wire at the disconnected 4-pin connector (from the wiring harness side of the body).
Is the resistance equal to the specified value?
|
≈ 0 ohm
|
Go to Step 8
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Go to Step 7
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7 |
Repair the open in the BLK circuit in the wire between ground and the four-pin body harness connector under the driver's seat.
Is the repair finished?
|
-
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System OK
|
-
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8 |
Try adjusting the power driver's seat forward and backward.
Does the power driver's seat move forward and backward?
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-
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Go to Step 14
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Go to Step 9
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9 |
Does the electric motor move back and forth when the electric motor is powered directly from the car battery?
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-
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Go to Step 10
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Go to Step 11
|
10 |
Is the repair finished?
|
-
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System OK
|
-
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11 |
Is the resistance of each wire equal to the specified value?
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≈ 0 ohm
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Go to Step 13
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Go to Step 12
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12 |
Repair an open circuit in the wires at pins 3 or 4.
Is the repair finished?
|
-
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System OK
|
-
|
13 |
Replace the power driver's seat motor assembly.
Is the repair finished?
|
-
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System OK
|
-
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14 |
Try adjusting the front height of the power driver's seat.
Does the front height adjustment work?
|
-
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Go to Step 18
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Go to Step 15
|
15 |
Does the up and down adjustment work when the electric motor is powered directly from the car battery?
|
-
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Go to Step 10
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Go to Step 16
|
16 |
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 pins 5 or 6.
Is the repair finished?
|
-
|
System OK
|
-
|
18 |
Try adjusting the height behind the power driver's seat.
Does the rear height adjustment work?
|
-
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Go to Step 22
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Go to Step 19
|
19 |
Does the up and down adjustment work when the electric motor is powered directly from the car battery?
|
-
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Go to Step 10
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Go to Step 20
|
20 |
Is the resistance of each wire equal to the specified value?
|
≈ 0 ohm
|
Go to Step 13
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Go to Step 21
|
21 |
Repair the open circuit in the wires at pins 5 or 6.
Is the repair finished?
|
-
|
System OK
|
-
|
22 |
Try adjusting the tilt of the power driver's seat.
Does the power driver's seat tilt?
|
-
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System OK
|
Go to Step 23
|
23 |
Does the up and down adjustment work when the electric motor is powered directly from the car battery?
|
-
|
Go to Step 10
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Go to Step 24
|
24 |
Is the resistance of each wire equal to the specified value?
|
≈ 0 ohm
|
Go to Step 13
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Go to Step 25
|
25 |
Repair an open in the wire circuit at terminals 9 or 10.
Is the repair finished?
|
-
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System OK
|
-
|
Carpet heating not working
Step | Operation | Values | Yes | No |
1 |
Check carpet heating.
Does the carpet heating work?
|
-
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System OK
|
Go to Step 2
|
2 |
Check fuse F30.
F30 fuse blown?
|
-
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Go to Step 3
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Go to Step 4
|
3 |
Is the repair finished?
|
-
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System OK
|
-
|
4 |
Using a voltmeter, check the voltage at terminal 5 of each (on the left and right side) carpet heating switch.
Does the voltmeter indicate the specified value?
|
11~14V
|
Go to Step 6
|
Go to Step 5
|
5 |
Repair open in the circuit between fuse F30 and terminal 5 of the heating mat switch.
Is the repair finished?
|
-
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System OK
|
-
|
6 |
Does the voltmeter indicate the specified value?
|
11~14V
|
Go to Step 8
|
Go to Step 7
|
7 |
Replace the heated mat switch.
Is the repair finished?
|
-
|
System OK
|
-
|
8 |
Does the voltmeter indicate 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 heated mat switch and terminal 1 of the left or right side heated mat.
Is the repair finished?
|
-
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System OK
|
-
|
10 |
Is the indicated voltage equal to the specified value?
|
11~14V
|
Go to Step 12
|
Go to Step 11
|
11 |
Replace left or right heated mat.
Is the repair finished?
|
-
|
System OK
|
-
|
12 |
Repair open ground circuit.
Is the repair finished?
|
-
|
System OK
|
-
|