Automatic Transmission External Controls: Other Mercury Sable V

Range Selection

This transaxle has 5 range positions: P, R, N, D and L.

Scheme 8

Park

In the PARK position

1. there is no powerflow through the transaxle.
2. the parking pawl locks the final drive.
3. the engine may be started.
4. the ignition key may be removed.

Reverse

In the REVERSE position

1. the vehicle may be operated in a rearward direction, at a reduced gear ratio.
2. engine braking will occur.

Neutral

In the NEUTRAL position

1. there is no powerflow through the transaxle.
2. the output shaft is not held and is free to turn.
3. the engine may be started.

Drive Position With Overdrive (O/D)

DRIVE is the normal position for most forward driving.

DRIVE provides

1. automatic shifts - 1st through 6th gears.
2. apply and release of the torque converter clutch (TCC).
3. maximum fuel economy during normal operation.

Manual L Position

This position provides

1. maximum engine braking.
2. downshifts to the lowest available gear for the current vehicle speed.

Manual L position allows for 1st gear when the vehicle reaches slower speeds.

Scheme 9

Drive with overdrive (O/D) cancel and grade assist is activated when the transmission control switch (TCS) is pressed. The TCS is located on the selector lever knob. When the TCS is pressed, the 6th gear or O/D upshift is prevented or the transaxle shifts down to 5th gear. The TCS is meant to be used when driving conditions cause excessive shifting from 6th to other gears such as hilly terrain, mountainous areas or when engine braking is required.

O/D Cancel

1. O/D is cancelled.
2. the transaxle operates in gears 1 through 5.
3. the O/D OFF lamp illuminates on the instrument cluster.

Grade Assist

1. Improves vehicle handling in hilly terrain or mountainous areas by providing additional grade (engine) braking and extends lower gear operation on uphill climbs.
2. Additional engine braking is provided through the automatic transaxle shift strategy which reacts to vehicle inputs (vehicle acceleration, accelerator pedal, brake pedal and vehicle speed).
3. The transaxle will select gears that will provide the engine braking desired, based on the vehicle inputs, this will increase engine RPM. during engine braking.

It is recommended to return to DRIVE mode on flat terrain to provide the best fuel economy and transaxle function. The transaxle returns to O/D when the TCS is pressed again or anytime the key is turned OFF.

Scheme 10

Special Tools Illustration Tool Name Tool Number 73III Digital Multimeter 105-R0057 or equivalent Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

Scheme 11

Pinpoint Tests

Refer to appropriate SYSTEM WIRING DIAGRAMS article, Transmission Controls for schematic and connector information.

Refer to appropriate SYSTEM WIRING DIAGRAMS article, Shift Interlock for schematic and connector information.

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1. A1 TEST THE BRAKE LIGHTS Apply the brake pedal and view the brake lights. Do the brake lights illuminate? YES : Go to A2 . NO : REFER to «EXTERIOR LIGHTING»(ref-293485) article.
2. A2 TEST SMART JUNCTION BOX (SJB) FUSE F5 (10A) Key in OFF position. Check fuse: F5 (10A) Is the resistance less than 5 ohms? YES : Go to A3 . NO : INSTALL a new fuse. Go to A3 .
3. A3 TEST THE SHIFT INTERLOCK ACTUATOR POWER CIRCUIT Disconnect: Selector Lever Harness C3245 Key in ON position. Measure the voltage between selector lever harness C3245-1, circuit CET53 (BU/OG) and ground, while applying the brake pedal. Is the voltage greater than 10 volts? YES : Go to A6 . NO : Go to A4 .
4. A4 TEST THE SHIFT INTERLOCK ACTUATOR POWER CIRCUIT FOR A SHORT TO GROUND Key in OFF position. Disconnect: SJB C2280C Measure the resistance between selector lever harness C3245-1, circuit CET53 (BU/OG) and ground. Is the resistance greater than 10,000 ohms? YES : Go to A5 . NO : REPAIR circuit CET53 (BU/OG) for a short to ground. TEST the system for normal operation.
5. A5 TEST THE SHIFT INTERLOCK ACTUATOR POWER CIRCUIT FOR AN OPEN Measure the resistance between selector lever harness C3245-1, circuit CET53 (BU/OG) and SJB C2280C-23, circuit CET53 (BU/OG). Is the resistance less than 5 ohms? YES : INSTALL a new SJB. TEST the system for normal operation. NO : REPAIR circuit CET53 (BU/OG) for an open.
6. A6 TEST THE SHIFT INTERLOCK ACTUATOR GROUND CIRCUIT Key in OFF position. Measure the resistance between floor selector lever harness C3245-4 circuit GD111 (BK/BU) and ground. Is the resistance less than 5 ohms? YES : INSTALL a new selector lever. REFER to «Selector Lever»(ref-293484-S10352297132008080700000) . NO : REPAIR circuit GD111 (BK/BU). TEST the system for normal operation.

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1. B1 TEST THE INSTRUMENT CLUSTER Connect the diagnostic tool. Using the scan tool, monitor the TC switch PID while cycling the TC switch. Does the TC switch PID cycle from closed to open? YES : REFER to «INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES»(ref-293475) article. NO : Go to B2 .
2. B2 CHECK SJB FUSE 30 (5A) Key in OFF position. Check fuse: Smart Junction Box (SJB) Fuse 30 (5A) Is the resistance less than 5 ohms? YES : Go to B3 . NO : Go to B4 .
3. B3 TEST THE TC SWITCH POWER CIRCUIT FOR AN OPEN Disconnect: Selector Lever Harness C3245 Disconnect: SJB Fuse 30 (5A) Measure the resistance between selector lever harness C3245-6, circuit CBP30 (YE/BU) and the output side of SJB fuse 30 (5A). Is the resistance less than 5 ohms? YES : Go to B5 . NO : REPAIR circuit CBP30 (YE/BU). RECONNECT all components. TEST the system for normal operation.
4. B4 TEST THE TC SWITCH POWER CIRCUIT FOR A SHORT TO GROUND Disconnect: Selector Lever Harness C3245 Disconnect: SJB Fuse 30 (5A) Measure the resistance between selector lever harness C3245-6 circuit CBP30 (YE/BU) and ground. Is the resistance greater than 10,000 ohms? YES : Go to B6 . NO : REPAIR circuit CBP30 (YE/BU) for a short to ground. RECONNECT all components. TEST the system for normal operation.
5. B5 TEST THE TC SWITCH SIGNAL CIRCUIT FOR AN OPEN Disconnect: PCM C175b Measure the resistance between selector lever harness C3245-5, circuit CET34 (BN/GN) and PCM C175b-16, circuit CET34 (BN/GN). Is the resistance less than 5 ohms? YES : Go to B7 . NO : REPAIR circuit CET34 (BN/GN) for an open. RECONNECT all components. TEST the system for normal operation.
6. B6 TEST THE TC SWITCH SIGNAL CIRCUIT FOR A SHORT TO GROUND Measure the resistance between selector lever harness C3245-5, circuit CET34 (BN/GN) and ground. Is the resistance greater than 10,000 ohms? YES : Go to B7 . NO : REPAIR circuit CET34 (BN/GN) for a short to ground. TEST the system for normal operation.
7. B7 TEST THE TC SWITCH Measure the resistance between selector lever connector C3245-5 and C3245-6, component side, while cycling the TC switch. Is the resistance less than 5 ohms when pressed and greater than 10,000 ohms when released? YES : INSTALL a new PCM. REFER to «ELECTRONIC ENGINE CONTROLS»(ref-293501) article. TEST the system for normal operation. NO : INSPECT the selector lever wiring harness for damage and repair as necessary. If the selector lever wiring harness is not damaged, INSTALL a new selector lever knob. TEST the system for normal operation.

Brake Shift Interlock Override

Note. If it is necessary to use the override procedure to move the selector lever out of the PARK position, it is possible that a fuse has blown and the brake lights are not operational. Before driving the vehicle, verify that the brake lights are working. This vehicle is equipped with a brake shift interlock feature that prevents the selector lever from being moved out of PARK when the ignition is in the ON position unless the brake pedal is depressed. If the selector lever cannot be moved out of the PARK position when the ignition is in the ON position and the brake pedal is depressed

1. Apply the parking brake and remove the ignition key.
2. Remove the access panel.
3. Using an suitable tool, depress the brake shift interlock override mechanism on the selector lever, apply the brake, depress the button on the selector lever and move the selector lever into NEUTRAL.
4. Start the vehicle.
5. To install, reverse the procedure.