4.12 Route hose (Tekalan) between the heat shield and body panel toward the two vacuum modulators on the muffler. In the area of the two
vacuum modulators, guide the vacuum lines past the neat shield and vertically up to the connections.
4.13 Trim the hose (Tekalan) and connect to the vacuum modulator with one bent protective sheath each.
Reassembling the vehicle.
5.0 Fit the fuse board and relay carrier 1. Insert the relay into the relay socket of the electrical wiring harness.
5.1 Install the remaining interior parts including the seat.
5.2 Uncover and connect the batter!.
5.3 Hook up the PST2.
Perform a function test of the system.
6.0 form a control unit search.
6.1 Select menu item "instrument cluster" and then page down and select "Speedometer A signal".
6.2 Have a second person visually check the operation of the exhaust flaps. Using the F5 button, increase the speedometer A-signal. The
movement of the linkage from the vacuum modulator to the exhaust flap indicates the flap function. If the flap function is correct, vacuum
will be present at the vacuum modulators at a speed of approx. 27 to approx. 42 mph. The exhaust flaps are closed in this case (closing
process: linkage moves up).
Note:
The flaps are normally open, and are closed by the actuators.
6.3 Use the F6 button to reset the signal back to zero.
Completing the reassembly.
7.0 Fit the engine compartment cover, carpet, and storage compartment.
7.1 Install the top tension cables and close top. Calibrate if necessary.
7.2 Install the rear spoiler, bumper bar, and bumper cover.
7.3 Input the radio code and set the time in the instrument cluster.
7.4 Road test the vehicle and then read out the fault memory of the control units. If necessary, repair faults then clear fault memory.
Troubleshooting:
Fault symptoms and remedies.
8.0 Exhaust flaps perform only one control process:
- Connection reversed on switchover valve (Figure 5, Item C).
- Connect vacuum hoses as shown in the diagram in Figure 5.
8.1 Check engine light on:
- Read out fault memory of the DME control unit. Most likely the fault set will be due to an intake leak. Leak test the intake system with
the special pressure tester tool (# 9264/6).
- Check the insertion depth of vacuum hoses.
8.2 Exhaust flaps do not react completely or do not react at high acceleration.
- This results from the response characteristics of the exhaust flaps.
