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Steering Columns - Power Tilt System: Other Lexus LS II

Steering Column 9 illustrations ~3077 words

* PLEASE READ FIRST *

Note. On vehicles equipped with a memory system option, test multiplex control system before proceeding with any other circuit tests. See MULTIPLEX CONTROL SYSTEM article.

Note. Check circuits and components in listed order. See TESTING for circuit testing procedures. If circuits or components are okay, return to trouble shooting and identify next circuit to be checked.

Both Tilt & Telescopic Functions Do Not Work

Check supply voltage to tilt and telescopic control module. See TILT & TELESCOPIC CONTROL MODULE PIN VOLTAGE (W/MEMORY) table or see TILT & TELESCOPIC CONTROL MODULE PIN VOLTAGE (W/O MEMORY) table. Check the following circuits

  1. ACTUATOR POWER SUPPLY CIRCUIT
  2. KEY UNLOCK WARNING SWITCH CIRCUIT
  3. TILT & TELESCOPIC POSITION SENSORS POWER SUPPLY CIRCUIT
  4. TILT & TELESCOPIC CONTROL MODULE

Only Tilt Function Does Not Work

Check the following circuits

  1. TILT POSITION SENSOR CIRCUIT
  2. TILT MOTOR CIRCUIT
  3. TILT & TELESCOPIC CONTROL MODULE

Only Telescopic Function Does Not Work

Check the following circuits

  1. TELESCOPIC POSITION SENSOR CIRCUIT
  2. TELESCOPIC MOTOR CIRCUIT
  3. TILT & TELESCOPIC CONTROL MODULE

Check the following circuits

  1. MANUAL SWITCH CIRCUIT
  2. TILT & TELESCOPIC CONTROL MODULE

Check the following circuits

  1. MANUAL SWITCH CIRCUIT
  2. TILT & TELESCOPIC CONTROL MODULE

Check the following circuits

  1. MANUAL SWITCH CIRCUIT
  2. TILT & TELESCOPIC CONTROL MODULE

Both Away & Return Movement Does Not Work

Check the following circuits

  1. IGNITION SWITCH CIRCUIT
  2. KEY UNLOCK WARNING SWITCH CIRCUIT
  3. TILT & TELESCOPIC CONTROL MODULE

Only Away Movement Does Not Work

Check the following circuits

  1. KEY UNLOCK WARNING SWITCH CIRCUIT
  2. TILT & TELESCOPIC CONTROL MODULE

Only Return Movement Does Not Work

Check the following circuits

  1. PARK/NEUTRAL POSITION SWITCH CIRCUIT
  2. TILT & TELESCOPIC CONTROL MODULE

Note. Circuit tests are provided with testing information on vehicles both with and without memory option. Ensure testing procedure used is for correct system.

With Or Without Memory

  1. Remove tilt and telescopic control module. With ignition off, measure voltage between connector T8, terminal No. 4 and ground. (Scheme 6)and (Scheme 7). If voltage is not 10-16 volts, go to next step. If voltage is 10-16 volts, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked.
  2. Measure resistance between connector T8, terminal No. 7 and ground. If resistance is less than one ohm, go to next step. If resistance is not less than one ohm, repair open in White/Black wire between control module connector T8, terminal No. 7 and ground. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000).
  3. Check continuity of 30 amp PWR fusible link. If continuity does not exist, check and repair short between control module connector T8, terminal No. 4 and fuse block. If continuity does not exist, check for open between control module connector T8, terminal No. 4 and fuse block.

Scheme 6

Scheme 6
Scheme 6

Scheme 7

Scheme 7
Scheme 7

With Memory

  1. Remove tilt and telescopic control module and leave harness connectors connected. With ignition on, measure voltage between tilt and telescopic control module connector T9, terminal No. 12 and ground. (Scheme 6)and (Scheme 7). Voltage should be 10-16 volts with ignition on and less than one volt with ignition off. If voltage is not as specified, go to next step. If voltage is as specified, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked.
  2. Check 10 amp GAUGE fuse in instrument panel fuse block. If fuse is okay, check for open Red/Blue wire between fuse block and tilt and telescopic control module connector. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000). If fuse is blown, check and repair for short in Red/Blue wire.

Without Memory

  1. Remove tilt and telescopic control module and leave harness connectors connected. With ignition on, measure voltage between tilt and telescopic control module connector T9, terminal No. 10 and ground. (Scheme 6)and (Scheme 7). Voltage should be 10-16 volts with ignition on and less than one volt with ignition off. If voltage is not as specified, go to next step. If voltage is as specified, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked.
  2. Check 10 amp GAUGE fuse in instrument panel fuse block. If fuse is okay, check for open Red/Blue wire between fuse block and tilt and telescopic control module connector. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000). If fuse is blown, check and repair for short in Red/Blue wire.
  1. Remove tilt and telescopic control module and leave harness connectors connected. Insert key into ignition but do not turn ignition on. Measure voltage between tilt and telescopic control module connector T9, terminal No. 8 and ground. (Scheme 6)and (Scheme 7). Voltage should be less than one volt with key in ignition and 10-16 volts with key removed from ignition. If voltage is as specified, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked. If voltage is not as specified, go to next step.
  2. Disconnect key unlock warning switch connector. Measure resistance between key unlock warning switch connector terminals No. 1 and No. 2. (Scheme 8) Resistance should be more than 1 megaohm with key removed from ignition switch. Continuity should exist with key inserted in ignition. If resistance is as specified, go to next step. If resistance is not as specified, replace key unlock warning switch and retest system.
  3. Check wiring harness between tilt and telescopic control module and key unlock warning switch. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000). If wiring harness is okay, replace tilt and telescopic control module and retest system.

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9: With Or Without Memory
Scheme 9: With Or Without Memory
  1. Remove tilt and telescopic control module and leave harness connectors connected. On vehicles without memory, measure voltage between tilt and telescopic control module connector T9, terminals No. 6 and No. 12. (Scheme 6)and (Scheme 7). On vehicles with memory, measure voltage between tilt and telescopic control module connector T8, terminal No. 2 and connector T9, terminal No. 18. On all models, operate manual switch in each position and note voltage reading. See «MANUAL SWITCH OPERATION PIN VOLTAGE»(ref-34398-S33518872952001101500000) table. If voltages are as specified, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked. If voltages are not as specified, go to next step. MANUAL SWITCH OPERATION PIN VOLTAGE Switch Position (1) Voltage Telescopic Extend 2.05-2.75 Tilt Up 1.30-1.70 Telescopic Retract.65-.95 Tilt Down.30-.50 (1) Approximate measured voltage.
  2. Disconnect manual switch wiring harness connector. Measure resistance between manual switch connector terminals No. 4 and No. 9. (Scheme 9) Operate manual switch in each position and note resistance. See «MANUAL SWITCH RESISTANCE»(ref-34398-S06543559282001101500000) table. If resistances are as specified, go to next step. If resistances are not as specified, replace tilt and telescopic manual switch. MANUAL SWITCH RESISTANCE Switch Position Ohms Telescopic Extend 160 Tilt Up 360 Telescopic Retract 790 Tilt Down 1990
  3. Check and repair wiring harness between tilt and telescopic control module and manual switch connector. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000). If wiring harness is okay, replace tilt and telescopic control module and retest system.

TILT & TELESCOPIC CONTROL MODULE

Check tilt and telescopic control module pin voltages. See TILT & TELESCOPIC CONTROL MODULE PIN VOLTAGE (W/MEMORY) table or see TILT & TELESCOPIC CONTROL MODULE PIN VOLTAGE (W/O MEMORY) table. (Scheme 6)and (Scheme 7). If any voltage is not as specified, check appropriate circuit test.

Terminal No. - Wire Color (1)ConditionsVoltage
T8 Connector
1 - BrownAt All TimesLess Than 1
2 - Brown/WhiteAt All TimesLess Than 1
3 (2) - Red/BlueTilt Motor (Down) (3)10-16
3 (2) - Red/BlueMotor IdleLess Than 1
4 - Blue/OrangeAt All Times10-16
5Not Used"
6 - Brown/YellowAt All TimesLess Than 1
7 - White/BlackAt All TimesLess Than 1
8 (2) - Blue/WhiteBelt Anchor Motor (Down) (3)10-16
8 (2) - Blue/WhiteMotor IdleLess Than 1
9 (2) - Blue/BlackTelescopic Motor (Retracting) (3)10-16
9 (2) - Blue/BlackMotor IdleLess Than 1
10 (2) - Red/BlackTilt Motor (Up) (3)10-16
10 (2) - Red/BlackMotor IdleLess Than 1
11 (2) - Blue/YellowTelescopic Motor (Extending) (3)10-16
12 (2) - Blue/RedBelt Anchor Motor (Up) (3)10-16
T9 Connector
1 (4) - PinkMemory Position Return Operating Between 1-6 (5)Oscillating
1 (4) - PinkMemory Position Return Not OperatingLess Than 1
2 (4) - Light GreenRight Door Mirror Moving (Left Or Right) (5)Oscillating Between 1-16
2 (4) - Light GreenMirror Not MovingLess Than 1
3 (4) - Brown/RedLeft Door Mirror Moving(Left Or Right) (5)Oscillating Between 1-16
3 (4) - Brown/RedMirror Not MovingLess Than 1
4 (4) - Light Green/BlackRight Door Mirror Moving(Up Or Down) (5)Oscillating Between 1-16
4 (4) - Light Green/BlackMirror Not MovingLess Than 1
5 (4) - Red/GreenLeft Door Mirror Moving(Up Or Down) (5)Oscillating Between 1-16
5 (4) - Red/GreenMirror Not MovingLess Than 1
6 (6) - Yellow/RedTelescope Fully Retract (3) (5)0-2
6 (6) - Yellow/RedTelescope Fully Extended (3) (5)3.5-5.5
7 (6) -Red/WhiteIgnition On4.5-5.5
8 (7) - OrangeShoulder Belt Adjust OnOscillating Between 1-5
9 - BrownAt All TimesLess Than 1
10 (4) - BlueMemory Position Return Operating (5)Oscillating Between 1-8
10 (4) - BlueMemory Position Return Not OperatingLess Than 1
11 (4) - YellowAt All TimesLess Than 1
12 (4) - White/BlackRight Or Left Mirror Moves RightOscillating Between 1-16
12 (4) - White/BlackMirror Not Moving RightLess Than 1
13 (4) - GreenRight Or Left Mirror Moves LeftOscillating Beteen 1-16
13 (4) - GreenMirror Not Moving LeftLess Than 1
14 - Green/WhiteTrans In "P" Position (5)10-16
14 - Green/WhiteTrans Not In "P" PositionLess Than 1
15 - Red/BlueIgnition On10-16
15 - Red/BlueIgnition OffLess Than 1
16Not Used"
17 (7) - Red/BlueGnition On4.5-5.5
18 (6) - Purpele/YellowSwitch Request (Telescope Extend) (5)2.05-2.75
18 (6) - Purpele/YellowSwitch Request (Tilt Up) (5)1.30-1.70
18 (6) - Purpele/YellowSwitch Request(Telescope Retract) (5).65- .95
18 (6) - Purpele/YellowSwitch Request (Tilt Down) (5).30-.50
18 (6) - Purpele/YellowSwitch Request (Idle) (5)Less Than .2
19 (6) - Purple/BlueTilt Fully Raised (5)0-2.5
19 (6) - Purple/BlueTilt Fully Lowered (5)2.5-5.5
20 (6) - Red/GreenIgnition On4.5-5.5
21 (6) - BlueIgnition On4.5-5.5
22 (4) - White/BlueAt All Times10-16
(1) Measure between specified terminal and ground unless otherwise noted. (Scheme 6)and (Scheme 7). (2) Measure between specified terminal and connector T8, terminal No. 7. (3) With key unlock warning switch on. (4) Measure between specified terminal and connector T9, terminal No. 9. (5) With ignition on. (6) Measure between specified terminal and connector T8, terminal No. 2. (7) Measure between specified terminal and connector T8, terminal No. 6.
(1)Measure between specified terminal and ground unless otherwise noted. (Scheme 6)and (Scheme 7).
(2)Measure between specified terminal and connector T8, terminal No. 7.
(3)With key unlock warning switch on.
(4)Measure between specified terminal and connector T9, terminal No. 9.
(5)With ignition on.
(6)Measure between specified terminal and connector T8, terminal No. 2.
(7)Measure between specified terminal and connector T8, terminal No. 6.

TILT & TELESCOPIC CONTROL MODULE PIN VOLTAGE (W/MEMORY)

Terminal No. - Wire Color (1)ConditionsVoltage
T8 Connector
1 2 (2) - Blue/BlackNot Used Telescopic Motor (Retracting) (3)" 10-16
1 2 (2) - Blue/BlackMotor IdleLess Than 1
3 (2) - Red/BlueTilt Motor (Down) (3)10-16
3 (2) - Red/BlueMotor IdleLess Than 1
4 - Blue/OrangeAt All Times10-16
5-6Not Used"
7 - White/BlackAt All TimesLess Than 1
8-9Not Used"
10 (2) - Red/BlackTilt Motor (Up) (3)10-16
10 (2) - Red/BlackMotor IdleLess Than 1
11 (2) - Blue/YellowTelescopic Motor (Extending) (3)10-16
11 (2) - Blue/YellowMotor IdleLess Than 1
12Not Used"
T9 Connector "
1-4Not Used"
5 - Brown/BlackAt All TimesLess Than 1
6 - Brown/WhiteAt All TimesLess Than 1
7 - White/BlackAt All TimesLess Than 1
8 - YellowKey In Ignition SwitchLess Than 1
8 - YellowKey Not In Ignition Switch10-16
9Not Used"
10 - Red/BlueIgnition On10-16
10 - Red/BlueIgnition OffLess Than 1
11 - Green/WhiteTrans. In "P" Position (4)10-16
11 - Green/WhiteTrans. Not In "P" Position (4)Less Than 1
12 (5) - Purple/YellowSwitch Request (Telescope Extend) (3) (4)2.05-2.75
12 (5) - Purple/YellowSwitch Request (Tilt Up) (3) (4)1.30-1.70
12 (5) - Purple/YellowSwitch Request (Telescope Retract) (3) (4).65-.95
12 (5) - Purple/YellowSwitch Request (Tilt Down) (3) (4).30-.50
12 (5) - Purple/YellowSwitch Request (Idle) (3) (4)Less Than 2
13 (5) - Purple/BlueTilt Fully Raised (3) (4)0-2.5
13 (5) - Purple/BlueTilt Fully Lowered (3) (4)3.5-5.5
14 (6) - Yellow/RedTelescope Fully Retract (3) (4)0-2
14 (6) - Yellow/RedTelescope Fully Extended (3) (4)3.5-5.5
15 (5) - Red/WhiteIgnition On4.5-5.5
16 (6) - Red/GreenIgnition On4.5-5.5
17 (5) - BlueIgnition On4.5-5.5
18 (7) - White/BlueAt All Times10-16
19-22Not Used"
(1) Measure between specified terminal and ground unless otherwise noted. (Scheme 6)and (Scheme 7). (2) Measure between specified terminal and connector T8, terminal No. 7. (3) With key unlock warning switch on. (4) With ignition on. (5) Measure between specified terminal and connector T9, terminal No. 6. (6) Measure between specified terminal and connector T9, terminal No. 5. (7) Measure between specified terminal and connector T9, terminal No. 7.
(1)Measure between specified terminal and ground unless otherwise noted. (Scheme 6)and (Scheme 7).
(2)Measure between specified terminal and connector T8, terminal No. 7.
(3)With key unlock warning switch on.
(4)With ignition on.
(5)Measure between specified terminal and connector T9, terminal No. 6.
(6)Measure between specified terminal and connector T9, terminal No. 5.
(7)Measure between specified terminal and connector T9, terminal No. 7.

TILT & TELESCOPIC CONTROL MODULE PIN VOLTAGE (W/O MEMORY)

  1. Remove tilt and telescopic control module. With ignition off, measure voltage between tilt and telescopic control module connector T9, terminal No. 9 and No. 22. (Scheme 6)and (Scheme 7). If voltage is not 10-16 volts, go to next step. If voltage is 10-16 volts, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked.
  2. Measure resistance between tilt and telescopic control module connector T9, terminal No. 9 and ground. If resistance is less than one ohm, go to next step. If resistance is not less than one ohm, repair open in Brown wire between control module connector T9, terminal No. 9 and ground. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000).
  3. Check 10 amp SEC HORN fuse. If fuse is okay, check for open in Blue/Yellow wire between tilt and telescopic control module connector T9, terminal No. 22 and fuse block. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000). If fuse is blown, check and repair short White/Blue wire between tilt and telescopic control module connector T9, terminal No. 22 and fuse block.
  1. Remove tilt and telescopic control module. With ignition off, measure voltage between tilt and telescopic control module connector T9, terminals No. 7 and No. 18. (Scheme 6)and (Scheme 7). If voltage is not 10-16 volts, go to next step. If voltage is 10-16 volts, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked.
  2. Measure resistance between tilt and telescopic control module connector T9, terminal No. 7 and ground. If resistance is less than one ohm, go to next step. If resistance is not less than one ohm, repair open in White/Black wire between control module connector T9, terminal No. 7 and ground. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000).
  3. Check 10 amp SEC HORN fuse. If fuse is okay, check for open in White/Blue wire between tilt and telescopic control module connector T10, terminal No. 20 and fuse block. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000). If fuse is blown, check and repair short Blue/Yellow wire between tilt and telescopic control module connector T10, terminal No. 20 and fuse block.
  1. Remove tilt and telescopic control module. With ignition off, measure voltage between tilt and telescopic control module connector T8, terminal No. 2 and connector T9, terminal No. 7. (Scheme 6)and (Scheme 7). Measure voltage between tilt and telescopic control module conn ector T8, terminal No. 2 and connector T9, terminal No. 20. If voltage is 4.5-5.5 volts, go to next step. If voltage is not 4.5-5.5 volts, go to step 3).
  2. Check and repair open in either tilt position sensor or telescopic position sensor circuits. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000). If wiring is okay, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked.
  3. Check and repair short in either tilt position sensor or telescopic position sensor circuits. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000). If wiring is okay, check tilt and telescopic control module. See «TILT & TELESCOPIC CONTROL MODULE PIN VOLTAGE (W/MEMORY)»(ref-34398-S12176654832001101500000) table. If voltages are not as specified, replace tilt and telescopic control module and recheck system.
  1. Remove tilt and telescopic control module. With ignition off, measure voltage between tilt and telescopic control module connector T9, terminals No. 6 and No. 15. (Scheme 6)and (Scheme 7). Measure voltage between tilt and telescopic control module connector T9, terminals No. 5 and No. 16. If voltages are 4.5-5.5 volts, go to next step. If either voltage is not 4.5-5.5 volts, go to step 3).
  2. Check and repair open in either tilt position sensor or telescopic position sensor circuits. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000). If wiring is okay, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked.
  3. Check and repair short in either tilt position sensor or telescopic position sensor circuits. See «WIRING DIAGRAMS»(ref-34398-S20418267542001101500000). If wiring is okay, check tilt and telescopic control module. See «TILT & TELESCOPIC CONTROL MODULE PIN VOLTAGE (W/O MEMORY)»(ref-34398-S01853068852001101500000) table. If voltages are not as specified, replace tilt and telescopic control module and recheck system.
  1. Remove tilt and telescopic control module. Remove tilt position sensor with harness connector still connected. Manually turn tilt position sensor lever to fully lowered position. On vehicles without memory, measure voltage between control module connector T9, terminals No. 6 and No. 13. On vehicles with memory, measure voltage between control module connector T8, terminal No. 2 and connector T9, terminal No. 19. (Scheme 6)and (Scheme 7).
  2. On all models, manually turn tilt position sensor lever to fully raised position. Voltage should decrease as lever is moved from lowered position to raised position. If voltage is 3.5-5.5 volts with lever in fully lowered position and operation is as specified, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked. If voltage not is 3.5-5.5 volts with lever in fully lowered position or operation is not as specified, go to next step.
  3. Disconnect tilt position sensor connector. Measure resistance between tilt position sensor connector terminals No. 1 and No. 2. (Scheme 10) If resistance is 3500-6500 ohms, go to next step. If resistance is not 3500-6500 ohms, replace tilt position sensor and recheck system.
  4. Manually turn tilt position sensor lever to fully raised position. Resistance should increase as lever is moved from fully raised to fully lowered position. Measure resistance between tilt position sensor connector terminals No. 2 and No. 3. If resistance is 3500-6500 ohms in fully lowered position and operation is as specified, go to next step. If resistance is not 3500-6500 ohms in fully lowered position or operation is not as specified, replace tilt position sensor and recheck system.
  5. Check and repair wiring harness and connectors between tilt and telescopic control module and tilt position sensor connector. If wiring harness and connectors are okay, replace tilt and telescopic control module and recheck system.

Scheme 10

Scheme 10
Scheme 10
  1. Disconnect tilt motor connector. Connect a fused jumper wire between battery positive terminal and tilt motor connector terminal No. 1. (Scheme 11) Connect a jumper wire between negative battery terminal and tilt motor connector terminal No. 2.
  2. Tilt motor should move column downward. Reverse polarity of jumper wires and ensure column moves upward. If operation is as specified, go to next step. If operation is not as specified, replace tilt motor and recheck system.
  3. Check and repair wiring harness between tilt motor and tilt and telescopic control module. If wiring is okay, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked.

Scheme 11

Scheme 11
Scheme 11
  1. Remove tilt and telescopic control module. Remove telescopic position sensor with harness connector still connected. Manually slide telescopic position sensor lever to fully extended position. On vehicles without memory, measure voltage between tilt and telescopic control module connector T9, terminals No. 5 and No. 14. On vehicles with memory, measure voltage between tilt and telescopic control module control module connector T8, terminal No. 2 and connector T9, terminal No. 6. (Scheme 6)and (Scheme 7).
  2. On all models, manually slide telescopic position sensor lever to fully retracted position. Voltage should decrease as lever is moved from extended position to retracted position. If voltage is 3.5-5.5 volts with lever in fully extended position and operation is as specified, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked. If voltage not is 3.5-5.5 volts with lever in fully extended position or operation is not as specified, go to next step.
  3. Disconnect telescopic position sensor connector. Manually slide telescopic position sensor lever to fully extended position. Measure resistance between telescopic position sensor connector terminals No. 1 and No. 2. (Scheme 12) If resistance is 3500-6500 ohms, go to next step. If resistance is not 3500-6500 ohms, replace telescopic position sensor and recheck system.
  4. Manually slide telescopic position sensor lever to fully retracted position. Resistance should increase as lever is moved from fully retracted to fully extended position. Measure resistance between telescopic position sensor connector terminals No. 1 and No. 4. If resistance is 3500-6500 ohms in fully extended position and operation is as specified, go to next step. If resistance is not 3500-6500 ohms in fully extended position or operation is not as specified, replace tilt position sensor and recheck system.
  5. Check and repair wiring harness and connectors between tilt and telescopic control module and telescopic position sensor connector. If wiring harness and connectors are okay, replace tilt and telescopic control module and recheck system.

Scheme 12

Scheme 12
Scheme 12
  1. Disconnect telescopic motor connector. Connect a fused jumper wire between battery positive terminal and telescopic motor connector terminal No. 1. (Scheme 13) Connect a jumper wire between negative battery terminal and telescopic motor connector terminal No. 2.
  2. Telescopic motor should move column downward. Reverse polarity of jumper wires and ensure column moves upward. If operation is as specified, go to next step. If operation is not as specified, replace telescopic motor and recheck system.
  3. Check and repair wiring harness between telescopic motor and tilt and telescopic control module. If wiring is okay, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked.

Scheme 13

Scheme 13
Scheme 13
  1. Turn ignition on. Ensure "P" lights up on instrument panel indicating transmission position is in Park. If "P" is not illuminated on instrument panel, repair shift position indicator. If "P" is illuminated on instrument panel, go to next step.
  2. Remove tilt and telescopic control module and leave harness connectors connected. Turn ignition on. On vehicles without memory, measure voltage between tilt and telescopic control module connector T9, terminal No. 10 and ground. On vehicles with memory, measure voltage between tilt and telescopic control module connector T9, terminal No. 14 and ground. (Scheme 6)and (Scheme 7).
  3. On all models, voltage should be 10-16 volts with transmission in "P" position. Voltage should be less than one volt with transmission in any other position. If voltage is as specified, go to «TROUBLE SHOOTING»(ref-34398-S19817155692001101500000) and identify next circuit to be checked. If voltage is not as specified, check for open in Green/Yellow wire between tilt and telescopic control module and park/neutral safety switch connector.
WARNINGAll models are equipped with air bag system. To avoid injury from accidental air bag deployment, read and carefully follow all WARNINGS and SERVICE PRECAUTIONS. See AIR BAG RESTRAINT SYSTEM article. DO NOT apply electrical power to any component on steering column without first deactivating air bag system. Air bag may deploy.

Note. Individual component removal and installation procedures are not available at time of publication. Steering column removal and installation procedures are provided to aid in removing some power tilt and telescopic steering system components.

Scheme 14

Scheme 14: Removal & Installation
Scheme 14: Removal & Installation
  1. Disconnect negative battery cable. Ensure front wheels are pointing straight ahead before disassembly. Using a screwdriver, remove 2 cover plates on each side of steering wheel. (Scheme 14) Remove 2 screws securing air bag to steering wheel. Pull air bag module from steering wheel and disconnect wiring harness from air bag module. WARNING: Place air bag module face up while working on vehicle. DO NOT attempt to disassemble air bag module. Severe injury or damage may occur if air bag accidently deploys.
  2. Remove steering wheel securing nut. Before removing steering wheel, make alignment marks on steering wheel and main shaft for reassembly. Using steering wheel puller, remove steering wheel from column.
  3. Remove screws securing under cover. Disconnect 2 DLC connectors from under cover and remove under cover. Remove finish plate and end pad. Disconnect hood lock release lever from lower cover.
  4. Remove lower cover from instrument panel. Remove one screw securing heater duct to register duct and remove heater duct. Remove 3 screws securing upper and lower steering column covers and remove covers.
  5. Remove combination switch and spiral cable. Make alignment marks on sliding yoke and control shaft before disassembly. Loosen upper bolt on control shaft and remove lower bolt securing column to control shaft. Remove upper bolt and disconnect sliding yoke from control shaft.
  6. Remove brake pedal return spring. Loosen hole cover clamp. Remove 4 column securing nuts-to-lower instrument bracket and remove column. To install, reverse removal procedure. Torque all bolts to specifications. See «TORQUE SPECIFICATIONS»(ref-34398-S08312458282001101500000).

More articles — Steering Columns - Power Tilt System