Contents Wiring diagrams Section: Seats All sections

Power Seat System: Other Chevrolet Silverado Classic 2500 HD

Seats 13 illustrations ~842 words

Heated Seat Element - Passenger Cushion

Connector Part Information OEM: 12064778 Service: 12126020 Description: 2-Way M Metri-Pack 150 Series (L-GN)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Heated Seat Element - Passenger Cushion Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
ABN2479Passenger Heated Seat Element Supply Voltage
BBK2480Heated Seat Cushion Element Control

Heated Seat Element - Passenger Cushion Terminal Identification

Scheme 13

Scheme 13: Memory Seat Module - C1
Connector Part Information OEM: 7283-5560-40 Service: See Catalog Description: 8-Way F Yazaki 2.8mm Unsealed (GY)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Memory Seat Module - C1 Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
1L-GN276Driver Seat Recline Motor Forward Control
2L-BU277Driver Seat Recline Motor Rearward Control
3TN285Driver Seat Horizontal Motor Forward Control
4L-GN284Driver Seat Horizontal Motor Rearward Control
5L-BU283Driver Seat Rear Vertical Motor Down Control
6YE282Driver Seat Rear Vertical Motor Up Control
7D-BU287Driver Seat Front Vertical Motor Down Control
8D-GN286Driver Seat Front Vertical Motor Up Control

Memory Seat Module - C1 Terminal Identification

Scheme 14

Scheme 14: Memory Seat Module - C2
Connector Part Information OEM: 7283-5625-40 Service: See Catalog Description: 13-Way F Yazaki Hybrid Unsealed (GY)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Memory Seat Module - C2 Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
1OG1440Battery Positive Voltage
2-3Not Used
4D-BU611Driver Seat Lumbar Motor Forward Control
5PK610Driver Seat Lumbar Motor Rearward Control
6Not Used
7BK1150Ground - Crew Cab
BK1250Ground - All Others
8Not Used
9YE1257Driver Seat Torso Bolster In Control
10PU1258Driver Seat Torso Bolster Out Control
11-13Not Used

Memory Seat Module - C2 Terminal Identification

Scheme 15

Scheme 15: Memory Seat Module - C3
Connector Part Information OEM: 174516-2 Service: See Catalog Description: 26-Way F AMP Hybrid (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Memory Seat Module - C3 Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
1RD/WH2077Heated Seat Cushion Element Supply Voltage (w/KA7)
2-3Not Used
4TN2408Driver Seat Lumbar Motor Rearward Switch Signal
5GY/RD5702Driver Seat Torso Bolster Out Switch Signal
6D-GN/WH1270Power Seat Recline Rearward Switch Signal
7Not Used
8L-GN1523Power Seat Horizontal Rearward Switch Signal
9L-BU1521Power Seat Rear Vertical Down Switch Signal
10D-BU1520Power Seat Front Vertical Down Switch Signal
11Not Used
12WH94012-Volt Reference
13WH19855-Volt Reference
14BN2432Driver Heated Seat Back Element Supply Voltage (w/KA7)
15-16Not Used
17YE2407Driver Seat Lumbar Motor Forward Switch Signal
18WH/RD5701Driver Seat Torso Bolster In Switch Signal
19GY/BK1269Power Seat Recline Forward Switch Signal
20Not Used
21TN1522Power Seat Horizontal Forward Switch Signal
22YE1519Power Seat Rear Vertical Up Switch Signal
23D-GN1518Power Seat Front Vertical Up Switch Signal
24OG1540Switch Voltage Supply
25BN/WH718Low Reference
26BK2751Low Reference

Memory Seat Module - C3 Terminal Identification

Scheme 16

Scheme 16: Memory Seat Module - C4
Connector Part Information OEM: 174515-6 Service: See Catalog Description: 22-Way F AMP Hybrid (GY)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Memory Seat Module - C4 Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
1L-BU2433Passenger Heated Seat Back Element Control
2PK2480Heated Seat Cushion Element Control
3BN/WH557Front Vertical Seat Motor Position Sensor Signal
4D-GN569Horizontal Seat Motor Position Sensor Signal
5YE1063Driver Seat Lumbar Horizontal Position Sensor Signal
6PU5700Driver Seat Torso Bolster Position Sensor Signal
7Not Used
8D-BU2425Driver Heated Seat Back Temperature Sensor Signal
9BN/WH1048Class 2 Serial Data
10Not Used
11D-BU2479Passenger Heated Seat Element Supply Voltage
12PU2424Driver Heated Seat Back Element Control
13L-GN2078Heated Seat Cushion Element Control (KA7)
14TN568Rear Vertical Seat Motor Position Sensor Signal
15Not Used
16BK/WH570Driver Seat Recline Motor Position Sensor Signal
17-18Not Used
19D-BU5475Front Passenger Heated Seat Back Temperature Signal
20-21Not Used
22D-BU2479Passenger Heated Seat Element Supply Voltage

Memory Seat Module - C4 Terminal Identification

Passenger Door Module (PDM) - C5 (Heated Seat Switch)

Connector Part Information OEM: 6383393-4 Service: See Catalog Description: 12-Way F AMP 0.64mm Unsealed (GN)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Passenger Door Module (PDM) - C5 (Heated Seat Switch) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
1YELow Heat Indicator Control
2D-GNHigh Heat Indicator Control
3D-BUBack and Cushion Select
4GYBack Only Select
5Not Used
6BNMemory/Heated Seat Switch Supply Voltage
7BKBack Only Indicator Control
8WH/BKMedium Heat Indicator Control
9-11Not Used
12L-BUHeated Seat Switch Backlight

Passenger Door Module (PDM) - C5 (Heated Seat Switch) Terminal Identification

Scheme 17

Scheme 17: Seat Adjuster Switch - Driver (AN3)
Connector Part Information OEM: 15326110 Service: 15306171 Description: 12-Way F GT 280 Series (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Adjuster Switch - Driver (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
AD-GN/WH1270Power Seat Recline Rearward Switch Signal
BGY/BK1269Power Seat Recline Forward Switch Signal
CNot Used
DL-GN1523Power Seat Horizontal Rearward Switch Signal
ETN1522Power Seat Horizontal Forward Switch Signal
FOG1540Switch Voltage Supply - Memory Seat Module
OG1540Switch Voltage Supply - Lumbar Switch
G-HNot Used
JL-BU1521Power Seat Rear Vertical Down Switch Signal
KYE1519Power Seat Rear Vertical Up Switch Signal
LD-BU1520Power Seat Front Vertical Down Switch Signal
MD-GN1518Power Seat Front Vertical Up Switch Signal

Seat Adjuster Switch - Driver (AN3) Terminal Identification

Scheme 18

Scheme 18: Seat Adjuster Switch - Driver (AG1)
Connector Part Information OEM: 12064998 Service: 15306189 Description: 8-Way F GT 280 Series (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Adjuster Switch - Driver (AG1) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
AD-GN286Driver Seat Front Vertical Motor Up Control
BD-BU287Driver Seat Front Vertical Motor Down Control
CYE282Driver Seat Rear Vertical Motor Up Control
DL-BU283Driver Seat Rear Vertical Motor Down Control
EBK1150Ground - Crew Cab
BK1250Ground - All Others
FL-GN284Driver Seat Horizontal Motor Rearward Control
GTN285Driver Seat Horizontal Motor Forward Control
HOG1440Battery Positive Voltage

Seat Adjuster Switch - Driver (AG1) Terminal Identification

Seat Adjuster Switch - Passenger (w/AN3)

Connector Part Information OEM: 15326110 Service: 15306171 Description: 12-Way F GT 280 Series (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Adjuster Switch - Passenger (w/AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
AOG1440Battery Positive Voltage
BL-GN290Passenger Seat Horizontal Motor Rearward Control
CTN296Passenger Seat Horizontal Motor Forward Control
DBK1250Ground
ED-BU77Passenger Seat Recline Motor Rearward
FD-GN76Passenger Seat Recline Motor Forward
GD-BU298Passenger Seat Front Vertical Motor Down Control
HD-GN297Passenger Seat Front Vertical Motor Up Control
JL-BU289Passenger Seat Rear Vertical Motor Down Control
KYE288Passenger Seat Rear Vertical Motor Up Control
L-MNot Used

Seat Adjuster Switch - Passenger (w/AN3) Terminal Identification

Scheme 19

Scheme 19: Seat Bolster/Lumbar Switch - Driver (AN3)
Connector Part Information OEM: 12052854 Service: 88953358 Description: 7-Way F Metri-Pack 280 Series (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Bolster/Lumbar Switch - Driver (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
AOG1540Battery Positive Voltage
BWH/RD5701Driver Seat Torso Bolster In Switch Signal
C-DNot Used
ETN2408Driver Seat Lumbar Motor Rearward Switch Signal
FYE2407Driver Seat Lumbar Motor Forward Switch Signal
GGY/RD5702Driver Seat Torso Bolster Out Switch Signal

Seat Bolster/Lumbar Switch - Driver (AN3) Terminal Identification

Seat Bolster/Lumbar Switch - Passenger (AN3)

Connector Part Information OEM: 12052854 Service: 88953358 Description: 7-Way F Metri-Pack 280 Series (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Bolster/Lumbar Switch - Passenger (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
AOG1440Battery Positive Voltage
BD-BU2462Passenger Seat Bolster Motor Forward Control
CBK1250Ground
DNot Used
ED-BU211Passenger Seat Lumbar Motor Forward Control
FWH210Passenger Seat Lumbar Motor Rearward Control
GL-BU2427Passenger Seat Bolster Motor Rearward Control

Seat Bolster/Lumbar Switch - Passenger (AN3) Terminal Identification

Scheme 20

Scheme 20: Seat Bolster Motor/Position Sensor - Driver (AN3)
Connector Part Information OEM: 15-97-5061 Service: See Catalog Description: 6-Way F MOLEX (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Bolster Motor/Position Sensor - Driver (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
1PK/BK1257Driver Seat Torso Bolster In Control
2Not Used
3TN/WH1258Driver Seat Torso Bolster Out Control
4D-BU/WH5288Low Reference
5PU/WH5700Driver Seat Torso Bolster Position Sensor Signal
6BN528712-Volt Reference

Seat Bolster Motor/Position Sensor - Driver (AN3) Terminal Identification

Scheme 21

Scheme 21: Seat Bolster Motor - Passenger (AN3)
Connector Part Information OEM: 12052109 Service: 12102769 Description: 2-Way F Metri-Pack 280 Series (BU)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Bolster Motor - Passenger (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
AOG2462Passenger Seat Bolster Motor Forward Control
BPK2427Passenger Seat Bolster Motor Rearward Control

Seat Bolster Motor - Passenger (AN3) Terminal Identification

Seat Lumbar Motor/Position Sensor - Driver (AN3)

Connector Part Information OEM: 15-97-5061 Service: See Catalog Description: 6-Way F MOLEX (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Lumbar Motor/Position Sensor - Driver (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
1PU/WH611Driver Seat Lumbar Motor Forward Control
2Not Used
3D-BU/WH610Driver Seat Lumbar Motor Rearward Control
4D-BU/WH5288Low Reference
5L-BU1063Driver Seat Lumbar Horizontal Position Sensor Signal
6BN528712-Volt Reference

Seat Lumbar Motor/Position Sensor - Driver (AN3) Terminal Identification

Seat Lumbar Motor - Passenger (AN3)

Connector Part Information OEM: 12052109 Service: 12102769 Description: 2-Way F Metri-Pack 280 Series (BU)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Lumbar Motor - Passenger (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
AD-BU211Passenger Seat Lumbar Motor Forward Control
BWH210Passenger Seat Lumbar Motor Rearward Control

Seat Lumbar Motor - Passenger (AN3) Terminal Identification

Scheme 22

Scheme 22: Seat Front Vertical Motor - Driver
Connector Part Information OEM: 12020556 Service: 12101820 Description: 2-Way F Metri-Pack 480 Series (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Front Vertical Motor - Driver Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
ABK287Driver Seat Front Vertical Motor Down Control
BRD286Driver Seat Front Vertical Motor Up Control

Seat Front Vertical Motor - Driver Terminal Identification

Seat Front Vertical Motor - Passenger

Connector Part Information OEM: 12020556 Service: 12101820 Description: 2-Way F Metri-Pack 480 Series (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Front Vertical Motor - Passenger Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
ARD297Passenger Seat Front Vertical Motor Up Control
BBK298Passenger Seat Front Vertical Motor Down Control

Seat Front Vertical Motor - Passenger Terminal Identification

Scheme 23

Scheme 23: Seat Front Vertical Position Sensor - Driver (AN3)
Connector Part Information OEM: 104257-2 Service: See Catalog Description: 3-Way F AMP (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Front Vertical Position Sensor - Driver (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
ARD94012-Volt Reference
BL-BU557Front Vertical Seat Motor Position Sensor Signal
CBK718Low Reference

Seat Front Vertical Position Sensor - Driver (AN3) Terminal Identification

Seat Horizontal Position Sensor - Driver (AN3)

Connector Part Information OEM: 104257-2 Service: See Catalog Description: 3-Way F AMP (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Horizontal Position Sensor - Driver (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
ARD94012-Volt Reference
BL-BU569Horizontal Seat Motor Position Sensor Signal
CBK718Low Reference

Seat Horizontal Position Sensor - Driver (AN3) Terminal Identification

Seat Rear Vertical Motor - Driver

Connector Part Information OEM: 12020556 Service: 12101820 Description: 2-Way F Metri-Pack 480 Series (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Rear Vertical Motor - Driver Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
ABK283Driver Seat Front Vertical Motor Down Control
BRD282Driver Seat Front Vertical Motor Up Control

Seat Rear Vertical Motor - Driver Terminal Identification

Seat Rear Vertical Motor - Passenger

Connector Part Information OEM: 12020556 Service: 12101820 Description: 2-Way F Metri-Pack 480 Series (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Rear Vertical Motor - Passenger Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
ABK289Passenger Seat Rear Vertical Motor Down Control
BRD288Passenger Seat Rear Vertical Motor Up Control

Seat Rear Vertical Motor - Passenger Terminal Identification

Seat Rear Vertical Position Sensor - Driver (AN3)

Connector Part Information OEM: 104257-2 Service: See Catalog Description: 3-Way F AMP (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Rear Vertical Position Sensor - Driver (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
ARD94012-Volt Reference
BD-BU568Rear Vertical Seat Motor Position Sensor Signal
CBK718Low Reference

Seat Rear Vertical Position Sensor - Driver (AN3) Terminal Identification

Scheme 24

Scheme 24: Seat Recliner Motor - Driver (AN3)
Connector Part Information OEM: 12129082 Service: 15305896 Description: 2-Way F Metri-Pack 480 Series (GY)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Recliner Motor - Driver (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
AL-BU277Driver Seat Recline Motor Rearward Control
BL-GN276Driver Seat Recline Motor Forward Control

Seat Recliner Motor - Driver (AN3) Terminal Identification

Scheme 25

Scheme 25: Seat Recliner Motor Position Sensor - Driver (AN3)
Connector Part Information OEM: 12059583 Service: 15305814 Description: 3-Way F Metri-Pack 280 Series (BK)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Recliner Motor Position Sensor - Driver (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
ABlocked Cavity
BBK2751Low Reference
CBK/WH570Driver Seat Recline Position Sensor Signal
DWH19855-Volt Reference

Seat Recliner Motor Position Sensor - Driver (AN3) Terminal Identification

Seat Recliner Motor - Passenger (AN3)

Connector Part Information OEM: 12129082 Service: 15305896 Description: 2-Way F Metri-Pack 480 Series (GY)
Terminal Part Information Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Seat Recliner Motor - Passenger (AN3) Connector & Terminal Parts Information

PinWire ColorCircuit No.Function
AD-BU77Passenger Seat Recline Motor Rearward
BD-GN76Passenger Seat Recline Motor Forward

Seat Recliner Motor - Passenger (AN3) Terminal Identification

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Lumbar Support Inoperative (w/o Memory)

StepActionYesNo
Schematic Reference: Driver Seat Schematics and Passenger Seat Schematics Connector End View Reference: Power Seat Connector End Views
1Did you review the Lumbar System Description and Operation and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Seats
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Disconnect the inoperative lumbar or torso motor connector. Connect a test lamp between the motor control circuit terminals in the harness connector. Operate the appropriate switch in both directions. Does the test lamp illuminate when the switch is operated in both directions?Go to Step 6Go to Step 4
4Test the motor control circuits for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 9Go to Step 5
5Inspect for poor connections at the lumbar switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 7
6Inspect for poor connections at the inoperative lumbar or torso motor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 8
7Replace the lumbar switch. Refer to Lumbar Switch Replacement .Go to Step 9
8Replace the lumbar support/torso bolster motor assembly. Refer to Front Seat Lumbar Support Replacement . Is the repair complete?Go to Step 9
9Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Lumbar Support Inoperative (w/o Memory)

Lumbar Support Inoperative (with Memory)

StepActionYesNo
Schematic Reference: Driver Seat Schematics Connector End View Reference: Power Seat Connector End Views
1Did you perform the Diagnostic System Check - Vehicle?Go to Step 2Go to Diagnostic System Check - Vehicle
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Install a scan tool. Observe the Lumbar and Torso Switch parameters in the driver seat module (DSM) Input/Output data list. Do any of the Lumbar or Torso Switch parameters display Active?Go to Step 4Go to Step 5
4Disconnect the lumbar adjuster switch connector. Do all of the Lumbar or Torso Switch parameters display Inactive?Go to Step 18Go to Step 13
5Observe the Lumbar Forward Switch parameter in the DSM Input/Output data list. Operate the lumbar forward switch. Does the scan tool display the lumbar forward switch as active?Go to Step 6Go to Step 9
6Observe the Lumbar Rearward Switch parameter in the DSM Input/Output data list. Operate the lumbar rearward switch. Does the scan tool display the lumbar rearward switch as active?Go to Step 7Go to Step 10
7Observe the Torso Inward Switch parameter in the DSM Input/Output data list. Operate the torso inward switch. Does the scan tool display the torso inward switch as active?Go to Step 8Go to Step 11
8Observe the Torso Outward Switch parameter in the DSM Input/Output data list. Operate the torso outward switch. Does the scan tool display the torso outward switch as active?Go to Step 19Go to Step 12
9Disconnect the lumbar switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the lumbar forward switch signal circuit terminal in the harness connector. Does the scan tool display the lumbar forward switch as Active?Go to Step 18Go to Step 14
10Disconnect the lumbar switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the lumbar rearward switch signal circuit terminal in the harness connector. Does the scan tool display the lumbar rearward switch as Active?Go to Step 18Go to Step 15
11Disconnect the lumbar switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the torso inward switch signal circuit terminal in the harness connector. Does the scan tool display the torso inward switch as Active?Go to Step 18Go to Step 16
12Disconnect the lumbar switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the torso outward switch signal circuit terminal in the harness connector. Does the scan tool display the torso outward switch as Active?Go to Step 18Go to Step 17
13Test the active lumbar or torso switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 22Go to Step 19
14Test the lumbar forward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 22Go to Step 19
15Test the lumbar rearward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 22Go to Step 19
16Test the torso inward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 22Go to Step 19
17Test the torso outward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 22Go to Step 19
18Inspect for poor connections at the harness connector of the lumbar switch assembly. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 22Go to Step 20
19Inspect for poor connections at the harness connector of the DSM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 22Go to Step 21
20Replace the lumbar switch assembly. Refer to Lumbar Switch Replacement . Did you complete the replacement?Go to Step 22
21Replace the DSM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement?Go to Step 22
22Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Lumbar Support Inoperative (with Memory)

Memory Seat Feature Inoperative

StepActionValuesYesNo
Schematic Reference: Driver Seat Schematics Connector End View Reference: Power Seat Connector End Views DEFINITION: One or more of the memory recall functions are inoperative from the Driver Door Memory Switch.
1Did you perform the Diagnostic System Check - Vehicle?Go to Step 2Go to Diagnostic System Check - Vehicle
2From the Driver Door Memory Switch attempt to set and recall memory 1, memory 2, and exit seat position settings. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Install a scan tool. Observe the Memory Switch parameter in the driver door module (DDM) Inputs data list. Press the memory 1 switch. Does the scan tool display the memory 1 switch as Active only while the switch is pressed?Go to Step 4Go to Step 6
4Observe the Memory Switch parameter in the DDM Inputs data list. Press the memory 2 switch. Does the scan tool display the memory 2 switch as Active only while the switch is pressed?Go to Step 5Go to Step 7
5Observe the Memory Switch parameter in the DDM Inputs data list. Press the EXIT switch. Does the scan tool display the EXIT switch as Active only while the switch is pressed?Go to Step 12Go to Step 8
6Disconnect the memory switch connector from the DDM. Using a DMM test the resistance through the memory switch from the switch supply voltage circuit terminal to the memory 1 switch signal circuit terminal in the switch harness connector. Refer to Circuit Testing and to Wiring Repairs . Press the memory 1 switch. Is the resistance less than the specified value only while the switch is pressed?0.5 ohmsGo to Step 13Go to Step 11
7Disconnect the memory switch connector from the DDM. Using a DMM test the resistance through the memory switch from the switch supply voltage circuit terminal to the memory 2 switch signal circuit terminal in the switch harness connector. Refer to Circuit Testing and to Wiring Repairs . Press the memory 2 switch. Is the resistance less than the specified value only while the switch is pressed?0.5 ohmsGo to Step 13Go to Step 11
8Disconnect the memory switch connector from the DDM. Using a DMM test the resistance through the memory switch from the switch supply voltage circuit terminal to the memory 1 switch signal circuit terminal in the switch harness connector. Refer to Circuit Testing and to Wiring Repairs . Press the EXIT switch. Is the resistance less than the specified value?0.5 ohmsGo to Step 9Go to Step 11
9Using a DMM test the resistance through the memory switch from the switch supply voltage circuit terminal to the memory 2 switch signal circuit terminal in the switch harness connector. Refer to Circuit Testing and to Wiring Repairs . Press the EXIT switch. Is the resistance less than the specified value only while the switch is pressed?0.5 ohmsGo to Step 10Go to Step 11
10Test the memory switch signal circuits in the switch harness for a short to ground or voltage. Refer to Circuit Testing . Are either of the switch signal circuits shorted to ground or voltage?Go to Step 14Go to Step 13
11Inspect for poor connections at the memory switch connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 17Go to Step 14
12Inspect for poor connections at the driver seat module (DSM) connectors. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 17Go to Step 15
13Inspect for poor connections at the DDM connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 17Go to Step 16
14Replace the memory switch. Refer to Front Seat Heater Switch Replacement . Is the repair complete?Go to Step 17
15Replace the DSM. Refer to Control Module References for replacement, setup, and programming. Is the repair complete?Go to Step 17
16Replace the DDM. Refer to Control Module References for replacement, setup, and programming. Is the repair complete?Go to Step 17
17Operate the memory seat system to verify the repair. Did you correct the condition?System OKGo to Step 3

Memory Seat Feature Inoperative

Power Seat Does Not Move Forward/Rearward (w/o Memory)

StepActionYesNo
Schematic Reference: Driver Seat Schematics and Passenger Seat Schematics Connector End View Reference: Power Seat Connector End Views
1Did you review the Power Seat System Description and Operation and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Seats
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Disconnect the horizontal adjuster motor connector. Connect a test lamp between the horizontal motor control circuit terminals in the harness connector. Operate the horizontal adjuster switch in both directions. Does the test lamp illuminate when the switch is operated in both directions?Go to Step 6Go to Step 4
4Test the horizontal motor control circuits for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 9Go to Step 5
5Inspect for poor connections at the seat adjuster switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 7
6Inspect for poor connections at the horizontal adjuster motor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 8
7Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete?Go to Step 9
8Replace the horizontal adjuster motor. Refer to Front Seat Adjuster Motor Replacement . Is the repair complete?Go to Step 9
9Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Does Not Move Forward/Rearward (w/o Memory)

Power Seat Does Not Move Forward/Rearward (with Memory)

StepActionYesNo
Schematic Reference: Driver Seat Schematics Connector End View Reference: Power Seat Connector End Views
1Did you perform the Diagnostic System Check - Vehicle?Go to Step 2Go to Diagnostic System Check - Vehicle
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Install a scan tool. Observe the Horizontal Forward and Rearward Switch parameters in the driver seat module Input/Output data list. Do either of the Horizontal Switch parameters display Active?Go to Step 4Go to Step 5
4Disconnect the seat adjuster switch connector. Do both of the Horizontal Switch parameters display Inactive?Go to Step 14Go to Step 10
5Operate the horizontal forward switch. Does the scan tool display the horizontal forward switch as Active?Go to Step 6Go to Step 7
6Operate the horizontal rearward switch. Does the scan tool display the horizontal rearward switch as Active?Go to Step 9Go to Step 8
7Disconnect the seat adjuster switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the horizontal forward switch signal circuit terminal in the harness connector. Does the scan tool display the horizontal forward switch as Active?Go to Step 14Go to Step 11
8Disconnect the seat adjuster switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the horizontal rearward switch signal circuit terminal in the harness connector. Does the scan tool display the horizontal rearward switch as Active?Go to Step 14Go to Step 12
9Disconnect the inoperative adjuster motor connector. Connect a test lamp across the control circuit terminals in the harness connector. Press and release the adjuster switch in both directions. Does the test lamp illuminate when the switch is pressed in both directions?Go to Step 16Go to Step 13
10Test the active horizontal switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
11Test the horizontal forward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
12Test the horizontal rearward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
13Test the motor control circuits for an open or a high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
14Inspect for poor connections at the seat adjuster switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 20Go to Step 17
15Inspect for poor connections at the driver seat module (DSM) harness connectors. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 20Go to Step 18
16Inspect for poor connections at the adjuster motor connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you fin and correct the condition?Go to Step 20Go to Step 19
17Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete?Go to Step 20
18Replace the DSM. Refer to Control Module References for replacement, setup, and programming. Is the repair complete?Go to Step 20
19Replace the inoperative adjuster motor. Refer to Front Seat Adjuster Motor Replacement . Is the repair complete?Go to Step 20
20Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Does Not Move Forward/Rearward (with Memory)

Power Seat Does Not Recline (w/o Memory)

StepActionYesNo
Schematic Reference: Driver Seat Schematics and Passenger Seat Schematics Connector End View Reference: Power Seat Connector End Views
1Did you review the Power Seats System Description and Operation and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Seats
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Disconnect the recline adjuster motor connector. Connect a test lamp between the recline motor control circuit terminals in the harness connector. Operate the recline adjuster switch in both directions. Does the test lamp illuminate when the switch is operated in both directions?Go to Step 6Go to Step 4
4Test the recline motor control circuits for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 9Go to Step 5
5Inspect for poor connections at the seat adjuster switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 7
6Inspect for poor connections at the recline adjuster motor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 8
7Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete?Go to Step 9
8Replace the recline adjuster motor. Refer to Front Seat Adjuster Motor Replacement . Is the repair complete?Go to Step 9
9Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Does Not Recline (w/o Memory)

Power Seat Does Not Recline (with Memory)

StepActionYesNo
Schematic Reference: Driver Seat Schematics Connector End View Reference: Power Seat Connector End Views
1Did you perform the Diagnostic System Check - Vehicle?Go to Step 2Go to Diagnostic System Check - Vehicle
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Install a scan tool. Observe the Recline Forward and Rearward Switch parameters in the driver seat module (DSM) Input/Output data list. Do either of the Recline Switch parameters display Active?Go to Step 4Go to Step 5
4Disconnect the seat adjuster switch connector. Do both of the Recline Switch parameters display Inactive?Go to Step 14Go to Step 10
5Operate the recline forward switch. Does the scan tool display the recline forward switch as Active?Go to Step 6Go to Step 7
6Operate the recline rearward switch. Does the scan tool display the recline rearward switch as Active?Go to Step 9Go to Step 8
7Disconnect the seat adjuster switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the recline forward switch signal circuit terminal in the harness connector. Does the scan tool display the recline forward switch as Active?Go to Step 14Go to Step 11
8Disconnect the seat adjuster switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the recline rearward switch signal circuit terminal in the harness connector. Does the scan tool display the recline rearward switch as Active?Go to Step 14Go to Step 12
9Disconnect the inoperative adjuster motor connector. Connect a test lamp across the control circuit terminals in the harness connector. Press and release the adjuster switch in both directions. Does the test lamp illuminate when the switch is pressed in both directions?Go to Step 16Go to Step 13
10Test the active recline switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
11Test the recline forward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
12Test the recline rearward switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
13Test the motor control circuits for an open or a high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
14Inspect for poor connections at the seat adjuster switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 20Go to Step 17
15Inspect for poor connections at the DSM harness connectors. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 20Go to Step 18
16Inspect for poor connections at the adjuster motor connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you fin and correct the condition?Go to Step 20Go to Step 19
17Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete?Go to Step 20
18Replace the DSM. Refer to Control Module References for replacement, setup, and programming. Is the repair complete?Go to Step 20
19Replace the inoperative adjuster motor. Refer to Front Seat Adjuster Motor Replacement . Is the repair complete?Go to Step 20
20Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Does Not Recline (with Memory)

Power Seat Does Not Tilt Forward (w/o Memory)

StepActionYesNo
Schematic Reference: Driver Seat Schematics and Passenger Seat Schematics Connector End View Reference: Power Seat Connector End Views
1Did you review the Power Seats System Description and Operation and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Seats
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Disconnect the front vertical adjuster motor connector. Connect a test lamp between the front vertical motor control circuit terminals in the harness connector. Operate the front vertical adjuster switch in both directions. Does the test lamp illuminate when the switch is operated in both directions?Go to Step 6Go to Step 4
4Test the front vertical motor control circuits for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 9Go to Step 5
5Inspect for poor connections at the seat adjuster switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 7
6Inspect for poor connections at the front vertical adjuster motor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 8
7Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete?Go to Step 9
8Replace the front vertical adjuster motor. Refer to Front Seat Adjuster Motor Replacement . Is the repair complete?Go to Step 9
9Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 2

Power Seat Does Not Tilt Forward (w/o Memory)

Power Seat Does Not Tilt Forward (with Memory)

StepActionYesNo
Schematic Reference: Driver Seat Schematics Connector End View Reference: Power Seat Connector End Views
1Did you perform the Diagnostic System Check - Vehicle?Go to Step 2Go to Diagnostic System Check - Vehicle
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Install a scan tool. Observe the Front Vertical Up and Down Switch parameters in the driver seat module (DSM) Input/Output data list. Do either of the Front Vertical Switch parameters display Active?Go to Step 4Go to Step 5
4Disconnect the seat adjuster switch connector. Do both of the Front Vertical Switch parameters display Inactive?Go to Step 14Go to Step 10
5Operate the front vertical up switch. Does the scan tool display the front vertical up switch as Active?Go to Step 6Go to Step 7
6Operate the front vertical down switch. Does the scan tool display the front vertical down switch as Active?Go to Step 9Go to Step 8
7Disconnect the seat adjuster switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the front vertical up switch signal circuit terminal in the harness connector. Does the scan tool display the front vertical up switch as Active?Go to Step 14Go to Step 11
8Disconnect the seat adjuster switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the front vertical down switch signal circuit terminal in the harness connector. Does the scan tool display the front vertical down switch as Active?Go to Step 14Go to Step 12
9Disconnect the inoperative adjuster motor connector. Connect a test lamp across the control circuit terminals in the harness connector. Press and release the adjuster switch in both directions. Does the test lamp illuminate when the switch is pressed in both directions?Go to Step 16Go to Step 13
10Test the active front vertical switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
11Test the front vertical up switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
12Test the front vertical down switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
13Test the motor control circuits for an open or a high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
14Inspect for poor connections at the seat adjuster switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 20Go to Step 17
15Inspect for poor connections at the DSM harness connectors. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 20Go to Step 18
16Inspect for poor connections at the adjuster motor connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you fin and correct the condition?Go to Step 20Go to Step 19
17Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete?Go to Step 20
18Replace the DSM. Refer to Control Module References for replacement, setup, and programming. Is the repair complete?Go to Step 20
19Replace the inoperative adjuster motor. Refer to Front Seat Adjuster Motor Replacement . Is the repair complete?Go to Step 20
20Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Does Not Tilt Forward (with Memory)

Power Seat Does Not Tilt Rearward (w/o Memory)

StepActionYesNo
Schematic Reference: Driver Seat Schematics and Passenger Seat Schematics Connector End View Reference: Power Seat Connector End Views
1Did you review the Power Seats System Description and Operation and perform the necessary inspections?Go to Step 2Go to Symptoms - Power Seats
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Disconnect the rear vertical adjuster motor connector. Connect a test lamp between the rear vertical motor control circuit terminals in the harness connector. Operate the rear vertical adjuster switch in both directions. Does the test lamp illuminate when the switch is operated in both directions?Go to Step 6Go to Step 4
4Test the rear vertical motor control circuits for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 9Go to Step 5
5Inspect for poor connections at the seat adjuster switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 7
6Inspect for poor connections at the rear vertical adjuster motor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 8
7Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete?Go to Step 9
8Replace the rear vertical adjuster motor. Refer to Front Seat Adjuster Motor Replacement . Is the repair complete?Go to Step 9
9Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Does Not Tilt Rearward (w/o Memory)

Power Seat Does Not Tilt Rearward (with Memory )

StepActionYesNo
Schematic Reference: Driver Seat Schematics Connector End View Reference: Power Seat Connector End Views
1Did you perform the Diagnostic System Check - Vehicle?Go to Step 2Go to Diagnostic System Check - Vehicle
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Install a scan tool. Observe the Rear Vertical Up and Down Switch parameters in the driver seat module (DSM) Input/Output data list. Do either of the Rear Vertical Switch parameters display Active?Go to Step 4Go to Step 5
4Disconnect the seat adjuster switch connector. Do both of the Rear Vertical Switch parameters display Inactive?Go to Step 14Go to Step 10
5Operate the rear vertical up switch. Does the scan tool display the rear vertical up switch as Active?Go to Step 6Go to Step 7
6Operate the rear vertical down switch. Does the scan tool display the rear vertical down switch as Active?Go to Step 9Go to Step 8
7Disconnect the seat adjuster switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the rear vertical up switch signal circuit terminal in the harness connector. Does the scan tool display the rear vertical up switch as Active?Go to Step 14Go to Step 11
8Disconnect the seat adjuster switch connector. Connect a fused jumper wire from the battery voltage supply circuit terminal to the rear vertical down switch signal circuit terminal in the harness connector. Does the scan tool display the rear vertical down switch as Active?Go to Step 14Go to Step 12
9Disconnect the inoperative adjuster motor connector. Connect a test lamp across the control circuit terminals in the harness connector. Press and release the adjuster switch in both directions. Does the test lamp illuminate when the switch is pressed in both directions?Go to Step 16Go to Step 13
10Test the active rear vertical switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
11Test the rear vertical up switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
12Test the rear vertical down switch signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
13Test the motor control circuits for an open or a high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 20Go to Step 15
14Inspect for poor connections at the seat adjuster switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 20Go to Step 17
15Inspect for poor connections at the driver seat module (DSM) harness connectors. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 20Go to Step 18
16Inspect for poor connections at the adjuster motor connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you fin and correct the condition?Go to Step 20Go to Step 19
17Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete?Go to Step 20
18Replace the DSM. Refer to Control Module References for replacement, setup, and programming. Is the repair complete?Go to Step 20
19Replace the inoperative adjuster motor. Refer to Front Seat Adjuster Motor Replacement . Is the repair complete?Go to Step 20
20Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Does Not Tilt Rearward (with Memory )

Power Seat Inoperative (w/o Memory)

StepActionYesNo
Schematic Reference: Passenger Seat Schematics and Passenger Seat Schematics Connector End View Reference: Power Seat Connector End Views DEFINITION: All of the seat adjuster motors are inoperative, the lumbar and bolster motors may also be inoperative.
1Did you review the Power Seats System Description and Operation?Go to Step 2Go to Symptoms - Power Seats
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Disconnect the seat adjuster switch connector. Connect a test lamp from the battery voltage supply circuit terminal in the harness connector to a good ground. Does the test lamp illuminate?Go to Step 4Go to Step 5
4Connect a test lamp from the battery voltage supply circuit terminal to the ground circuit terminal in the seat adjuster switch harness connector. Does the test lamp illuminate?Go to Step 7Go to Step 6
5Repair the battery voltage supply circuit for an open or short to ground. Refer to Wiring Repairs . Is the repair complete?Go to Step 9
6Repair the ground circuit for an open or high resistance. Refer to Wiring Repairs . Is the repair complete?Go to Step 9
7Inspect for poor connections at the seat adjuster switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 9Go to Step 8
8Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete?Go to Step 9
9Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Inoperative (w/o Memory)

Power Seat Inoperative (with Memory)

StepActionYesNo
Schematic Reference: Driver Seat Schematics Connector End View Reference: Power Seat Connector End Views DEFINITION: All of the seat adjuster motors are inoperative, the lumbar and bolster motors may also be inoperative.
1Did you perform the Diagnostic System Check - Vehicle?Go to Step 2Go to Diagnostic System Check - Vehicle
2Verify the condition is present. Does the system operate normally?Go to Testing for Intermittent Conditions and Poor ConnectionsGo to Step 3
3Install a scan tool. Observe the Seat Adjuster Switch parameters in the driver seat module (DSM) Input/Output data list. Do all of the Seat Adjuster Switch parameters display Active?Go to Step 7Go to Step 4
4Operate the seat adjuster switches in both directions. Does the scan tool display the correct switch status parameters in relation to the actual switch positions?Go to Step 9Go to Step 5
5Disconnect the seat adjuster switch connector. Using a DMM test for battery voltage at the switch supply voltage circuit terminal in the harness connector. Is battery voltage present on the switch supply voltage circuit?Go to Step 8Go to Step 6
6Test the switch supply voltage circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 12Go to Step 9
7Disconnect the seat adjuster switch connector. Test the active switch signal circuit for a short to voltage. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition?Go to Step 12Go to Step 9
8Inspect for poor connections at the seat adjuster switch connector. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 12Go to Step 10
9Inspect for poor connections at the DSM connectors. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?Go to Step 12Go to Step 11
10Replace the seat adjuster switch. Refer to Power Seat Switch Replacement . Is the repair complete?Go to Step 12
11Replace the DSM. Refer to Control Module References for replacement, setup, and programming. Is the repair complete?Go to Step 12
12Operate the system to verify the repair. Did you correct the condition?System OKGo to Step 3

Power Seat Inoperative (with Memory)

Memory Seat System Components

The memory seat system consists of the following components

  1. Power seat switch assembly
  2. Memory recall switch assembly
  3. Horizontal adjuster motor
  4. Front vertical adjuster motor
  5. Rear vertical adjuster motor
  6. Recline adjuster motor
  7. Driver seat module
  8. Driver door module
  9. SEAT 30A circuit breaker