High-Altitude Kit "A"
INSTALLATION PROCEDURES FOR INDIVIDUAL KITS
1. HIGH-ALTITUDE KIT A
1-1) Component parts
1-2) Installation procedures
NOTE:
Numbers enclosed with a circle, in the following explanation denote the parts shown in Fig. 1.
1) Grounding wire and hoses
a) Attach the grounding wire (1) with the bolt ("A" in Fig. 2.) holding the vacuum switch bracket to the body.
NOTE: Make sure that the bolt is securely tightened.
b) Connect the connector ("B" in Fig. 2.) at the opposite end of the grounding wire to the black single-pole connector protruding from the body harness.
NOTE: Insert the connector until it is locked.
c) Remove the rubber cap from the nipple located on the rear side of the carburetor ("C" in Fig. 3).
d) Remove the hose extending from the control air filter to the duty solenoid (slow) and remove the hose clamps.
e) Install the hose (4 x 9 x 25 x 185) (3) to the hose assembly (2) and install them in place of the hose removed in Step d). At this time, fit the hose clamps removed in Step d).
f) Connect the hose (4 x 9 x 25 x 185) (3) to the nipple "C" on the rear side of the carburetor and secure to the duty hose with the clamp (6) as shown in Fig. 3.
g) On manual transmission vehicles, remove the hose extending from the surge tank to the duty solenoid valve (main) and remove the hose clamp. (The hose removed contains an orifice). Install the hose (5.5 x 12 x 35 x 35) (7) in place of the removed hose. At this time, install the hose clamp. (Fig. 3).
2) Replacement and Addition of EGR Leak Orifice
a) Manual transmission vehicles
Remove the (hatched) hose as shown in Fig. 4, insert the orifice with a groove around it, contained in the orifice set (5), into the hose (4 x 9 x 25 x 25) (4), and install the hose to the same position as the removed hose.
b) Automatic transmission vehicles
Remove the two rubber caps as shown in Figure 4, put the grooveless orifice, contain in the orifice set (5), into the hose, (4 x 9 x 25 x 25) (4), and install the hose to the same positions as the removed rubber caps.
3) Checking and adjusting engine idling speed.
Check to see that the engine idling speed is within the range shown in the following table, and adjust if necessary.
Manual transmission vehicles: 700 +/- 100 rpm
Automatic transmission vehicles: 800 +/- 100 rpm
(at neutral (N) or P position)
4) Affixing high altitude label
On vehicles equipped with this high-altitude kit, affix the high-altitude label to the reverse side of the engine hood, at the position shown in Fig. 5.
1-3) Function checking
After completion of the above procedure check for high-altitude function according to the flow chart shown in Fig. 6.
High-altitude to low-altitude modification procedure.
To return a vehicle, modified to high-altitude specification by use of kit A, into low-altitude specifications, proceed as follows:
1) Remove the grounding wire. (See Figure 2.)
2) Remove the hose from position "C" on the rear side of the carburetor and cap the opening. (See Figure 3.)
3) Remove the hose (hose assembly 2 shown in Figure 3.) connected between the control air filter and the duty solenoid valve (slow). Connect a single hose instead.
4) On manual transmission vehicles, replace the hose which connects the surge tank and the duty solenoid valve (main) with the hose removed while installing the H.A. kit.
5) Replace the EGR leak orifice to low-altitude specifications shown. (See Figure 4.)
Vehicle type Orifice diameter
Manual transmission vehicles 0.7 mm
Automatic transmission vehicles (Rubber cap)
6) Check to see that the engine idling speed is within the specified range and adjust if necessary.
Manual transmission vehicles: 700 +/- 100 rpm
Automatic transmission vehicles: 800 +/- 100 rpm
(at neutral (N) or P position)
7) Remove the high-altitude label from the reverse side of the engine hood. (See figure 5.)
8) Check for low-altitude function in the same manner as described in 1-3). However, the trouble code "21" in Figure 6 should read "22".