External Control: Other Jaguar XKR I

Gearshift Interlock Manual Override

The interlock system which locks the selector in P and prevents the ignition key from being removed except when P is selected, may be manually overridden in the event of an emergency.

1. With the parking brake applied.
2. Remove the access blank using a suitable Torx bit.
3. Insert a small screwdriver into the vacated hole.
4. Push the screwdriver downwards, gently, and hold while simultaneously moving the selector from P towards R , but do not engage R until the tool has been removed.
5. An audible warning may be heard when operation 4 is carried out.
6. With the selector in N and the access blank replaced, the vehicle may be started.

Range Selection

1. The selector lever transmits operator demand to the transmission and TCM by means of a cable and Dual-Linear Switch (DLS).
2. The lever operates the transmission assembly selector shaft, only for P R N D , by means of a cable. Movement of the lever across the gate to 4, 3 and 2 positions disengages the cable from the selector lever and engages the DLS which controls gear selection electronically.

Gear Selector Module

1. Provides illumination of the decal relevant to the gear selected. This information is provided by CAN from the TCM.
2. Illuminates the security system Active LED on the gear selector surround, in response to an output from the BPM.

Scheme 116

The performance mode push-button

1. Is mounted on the gear selector surround.
2. This "push-on push-off" switch selects Normal or Sport mode ( push-on for Sport).
3. Is illuminated when Sport mode is selected.
4. Is hard-wired to the transmission control module.

With "Norma" selected the transmission will start off in 2nd gear with kickdown to 1st being available.

"Sport" mode allows 1st gear engagement from rest and modifies values in the TCM shift point calculations to provide higher upshift speeds and enhanced availability of downshifts.

Scheme 117

The kickdown switch

1. Is floor mounted under the accelerator pedal.
2. Is operated by pressing the pedal to the full throttle position.
3. Provides maximum acceleration on driver demand, by signalling the transmission control module to select the lowest gear to give maximum wheel torque.

Gear Selector Interlock Solenoid

1. Prevents the gear selector lever from being moved from P , unless the ignition switch is in position II, and the brake pedal is depressed.
2. Is controlled by an output from the BPM.

Park Position Switch

1. Is hard-wired to the BPM.
2. Detects when the gear selector lever is moved to the Park position.

Dual-Linear Switch (DLS)

The TCM detects gear selection by means of a switch fitted to the "J" gate; the DLS contains two multi-track slider switches, of which the upper controls P R N D and the lower 4 3 2.

Output from the DLS is changed as the selector lever is moved, thus indicating selected gear position. The parallel signal is input to the TCM by 4 discrete logic wires W0, W1, W2 and W3. The particular sequence, or gray code, will indicate which shift position is selected, as shown in the following table where 0 = low and 1 = high.

Scheme 118

Scheme 119

The gear selector at the transmission unit

1. Is connected to the operators selector module by cable.
2. Operates the selector valve, at the electro-hydraulic control unit.

Shift Stuck In "P"

POSSIBLE CAUSES

1. Selector cable seized. ACTION TO TAKE: GO to «SELECTOR LEVER CABLE & BRACKET»(ref-171879-S25550971392005021500000) .

POSSIBLE CAUSES

1. Interlock solenoid not operating. ACTION TO TAKE: GO to Portable Diagnostic Unit (PDU).

POSSIBLE CAUSES

1. Interlock latch seized.
2. Transmission faulty. ACTION TO TAKE: Mechanical check.

POSSIBLE CAUSES

1. Operator sequence error. ACTION TO TAKE: Correct the sequence.

Vehicle Rolls On "P"

POSSIBLE CAUSES

1. Incorrect cable adjustment. ACTION TO TAKE: GO to «SELECTOR LEVER CABLE ADJUSTMENT»(ref-171879-S08541685732005021500000) .

POSSIBLE CAUSES

1. Faulty parking pawl (transmission internal). ACTION TO TAKE: Mechanical check.

"R" Does Not Engage

POSSIBLE CAUSES

1. Incorrect cable adjustment. ACTION TO TAKE: GO to «SELECTOR LEVER CABLE ADJUSTMENT»(ref-171879-S08541685732005021500000) .

POSSIBLE CAUSES

1. Transmission fluid level incorrect. ACTION TO TAKE: GO to «TRANSMISSION FLUID FILLING»(ref-171810-S18870355362005021400000) .

"N" Not Achieved

POSSIBLE CAUSES

1. Incorrect cable adjustment.
2. Transmission faulty. ACTION TO TAKE: GO to «SELECTOR LEVER CABLE ADJUSTMENT»(ref-171879-S08541685732005021500000) .

"D" Does Not Engage

POSSIBLE CAUSES

1. Incorrect cable adjustment. ACTION TO TAKE: GO to «SELECTOR LEVER CABLE ADJUSTMENT»(ref-171879-S08541685732005021500000) .

POSSIBLE CAUSES

1. Transmission fluid level incorrect. ACTION TO TAKE: GO to «TRANSMISSION FLUID FILLING»(ref-171810-S18870355362005021400000) .

POSSIBLE CAUSES

1. Transmission faulty. ACTION TO TAKE: Mechanical check.

Lower Ratios Will Not Hold

POSSIBLE CAUSES

1. Excessive engine temperature.
2. Dual Linear Switch (DLS) fault. ACTION TO TAKE: GO to PDU.

Shift Lever Position Not Visually Correct

POSSIBLE CAUSES

1. Incorrect cable adjustment. ACTION TO TAKE: GO to «SELECTOR LEVER CABLE ADJUSTMENT»(ref-171879-S08541685732005021500000) .

Shift Lever Has No Effect Upon The Transmission And Resistance Cannot Be Felt

POSSIBLE CAUSES

1. Cable disconnected or broken.
2. Transmission selector problem.
3. Shift lever drive pin adrift. ACTION TO TAKE: Mechanical check

Shift Lever Position Not Align Correctly Following Manual Selection Of Lower Ratios

POSSIBLE CAUSES

1. Sliding block drive pin displaced - following road debris contact. ACTION TO TAKE: Mechanical check. Renew the selector if damaged, or re-align the drive pin and sliding block.

Engine May Be Started In Positions Other Than "P" Or "N"

POSSIBLE CAUSES

1. Incorrect cable adjustment.
2. DLS fault. ACTION TO TAKE: GO to «SELECTOR LEVER CABLE ADJUSTMENT»(ref-171879-S08541685732005021500000) .