Power Interrupt Connector/Switch: Service and Repair
Removing And Installing Relay For Main Switch - GT3
NOTE: For GT3 vehicles in the Club Sport model, a main battery relay can be retrofitted with an EMERGENCY STOP switch inside. The outer EMERGENCY STOP switch in the front left cowl panel cover of the fluid tank and the necessary wiring are pre-fitted.
CAUTION: The vehicle must not be driven on public roads when in the "Racing track" status. When the inner or outer EMERGENCY STOP switch is actuated, the entire electrical system is disconnected from the battery. This means that all electrical consumers are switched off, including those required for driving on public roads. The handling behaviour of the vehicle is changed due to the deactivated power supply for the control electronics.
Installing The Main Battery Relay
NOTE: After the installation of the main battery relay and switching off using the inner/outer EMERGENCY STOP switch, the "Work instructions after disconnecting the battery" described in Chapter 9 must be observed. The battery may discharge if kept at a standstill for relatively long periods in the "Racing track" status with the EMERGENCY STOP switches actuated.
The main battery relay is installed to the right of the battery (in conjunction with a battery of maximum 60 Ah). Fasten using the hexagon-head bolt M 8 x 16 enclosed in the delivery scope (tightening torque 23 Nm (17 ftlb.)).
1. Remove the battery cover, the available ground cable - from the battery to the bulkhead - and the right cowl panel cover.
2. In the case of a left-hand drive vehicle, lay the ground cable -1- pre-fitted on the main battery relay from the relay (terminal 88) along behind the battery and connect it (tightening torque 6 Nm (4.5ftlb.)).
3. In the case of a right-hand drive vehicle, replace the ground cable pre-fitted on the main battery relay with the enclosed (shorter) cable and connect it to the ground terminal of the battery (tightening torque 6 Nm (4.5 ftlb.)).
4. Lay the ground cable from the relay (terminal 88a) to the right body/bulkhead ground point and screw it in place (tightening torque 20 Nm (15 ftlb.)).
5. Lay the positive cable -2- from the main battery relay (pre-fitted) to the positive battery terminal and screw it in place on the positive terminal with the hexagon-head bolt M 6 x 12 (tightening torque 6 Nm (4.5 ftlb.)).
6. The additional plug connection of the jumper plug and the wiring harness (secured with tie wrap) is located under the right cowl panel cover in the area of the right dome strut. Cut the tie wrap with side cutters. Disconnect the 6-pin additional plug connection from the jumper plug and the wiring harness.
7. Engage the plug connection in the 6-pin support on the main battery relay.
Installing Inner EMERGENCY STOP Switch
NOTE: The necessary EMERGENCY STOP switch is delivered depending on the additional equipment present:
EMERGENCY STOP switch in the centre console M 581.
EMERGENCY STOP switch - without centre console M 581 - in front of shift lever.
1. Carefully unclip the standard cover trims upwards with a suitable tool (e.g. screwdriver; plastic spatula).
2. The 3-pin plug connection required for the EMERGENCY STOP switch is located under the cover in front of the shift lever and is marked with a white identification tape -A-. Connect the 3-pin plug to the plug connection of the EMERGENCY STOP switch and clip the relevant cover back into place.
Removing The Main Battery Relay
NOTE: After the removal of the main battery relay and switching off using the inner/outer EMERGENCY STOP switch, the "Work instructions after disconnecting the battery".
1. Remove the battery cover and the right cowl panel cover.
2. Disconnect the ground terminal of the battery and lower away from the battery terminal.
3. Disconnect the 6-pin plug connection on the main battery relay by pressing on the locking lever and pulling the plug connection apart.
4. Lay the 6-pin plug under the right cowl panel cover and connect the plug to the 6-pin plug located under the right dome strut. Fasten the plug connection to the wiring harness with a tie wrap.
5. Unscrew the hexagon-head bolt M 6 x 12 on the positive cable -2- at the positive battery terminal.
6. Remove the ground cable -1- from the relay (terminal 88) (in left-hand drive vehicles laid next to the battery). In right-hand drive vehicles, make sure that the battery is installed in the opposite manner from that shown in the figure.
7. Unscrew the ground cable from the relay (terminal 88a) to the bulkhead/body ground point and remove.
8. Screw the battery ground cable fitted upon delivery to the bulkhead/body (tightening torque 20 Nm (15 ftlb.)),
9. Unscrew the hexagon-head bolt M 8 x 16 designed for fastening the main battery relay holder and remove the main battery relay including holder, wiring and hexagon-head bolt from the vehicle.
10. Connect the battery ground cable to the ground terminal of the battery and tighten the hexagon-head bolt with a tightening torque of 6 Nm (4.5 ftlb.)).
11. Fit the cowl panel cover and the battery cover.
Removing The Inner EMERGENCY STOP Switch
The necessary EMERGENCY STOP switch is installed depending on the additional equipment present:
EMERGENCY STOP switch in the centre console M 581.
EMERGENCY STOP switch - without centre console M 581 - in front of shift lever.
1. Carefully unclip the cover trims with the EMERGENCY STOP switch upwards with a suitable tool (e.g. screwdriver; plastic spatula).
2. Disconnect the 3-pin plug connection connected to the EMERGENCY STOP switch from the wiring harness by pushing and pulling. Insert the wiring harness which is marked with a white identification tape -A- into the shaft in the centre console. Clip the standard cover -without EMERGENCY STOP switch- into place.
Operating The Main Battery Switch
- Status A - "Street". Status B - "Racing track".
NOTE: Turn the red actuation toggle (on the main battery relay) clockwise as far as the stop, status -A- (bayonet). The main battery refay and the inner and outer EMERGENCY STOP switches are without function.
NOTE:
- Turn the red actuation toggle counter-clockwise and remove, status -B-.
- Outer EMERGENCY STOP switch - left cowl panel cover, standard - press forwards (switch position "On"), The EMERGENCY STOP switch is actuated with the red pull loop, which can be disengaged and laid towards the outside under the rear edge of the luggage compartment lid.
- Actuating Inner EMERGENCY STOP Switch
Push lever of the toggle switch forwards.
Fold the transparent cover of the emergency switch forwards and press the red switch. The switch position "Racing track" is displayed with a warning lamp in the switch.
- Moving The EMERGENCY STOP Switch To Its Starting Position:
Press the red emergency switch once more and close the cover.
NOTE: After the installation of the main battery relay and switching off using the inner/outer EMERGENCY STOP switch, the "Work instructions after disconnecting the battery".