MCi Crusader II 1989 Maintenance Manual page 325

Date
1-1-89
Page ____
9-_1_1 - -
MC-9 MAINTENANCE MANUAL
TERMINAL
SOCKET.
CONNECTOR NO. OR PIN CIRCUIT
1
2
3
4
TROUBLE
SYSTEM IS "SLUGGISH" IN RESPONSE WHEN THE
SPEED IS SET OR THE ACCELERATION OR COAST
FEATURES ARE USED.
SYSTEM WILL DISENGAGE WHEN A BRAKE
APPLICATION IS MADE. BUT AFTER BRAKE
RELEASE. THE SYSTEM WILL ATTEMPT TO
RESUME THE SET SPEED.
COACH WILL NOT ACCELERATE WHEN THE
RESUME SWITCH IS DEPRESSED ANO HELD; WILL
NOT RESUME ORIGINAL SET SPEED AFTER
BRAKE APPLICATION.
(Standard transmission coaches) SYSTEM DOES
NOT DISENGAGE WHEN CLUTCH PEDAL
IS DEPRESSED. -
1
2
3
4
1
2
3
1
2
3
1
2
3
4
Set switch
Resume switch
vehicle electrical power
stoo lame switch
clutch switch
clutch switch electrical power
speed sensor input
potentiometer supply
potentiometer wiper
potentiometer ground
supply solenoid
exhaust solenoid
exhaust solenoid power
supply solenoid power
CAUSE
1. Bent, kinked or damaged throttle cable assembly.
2. Obstructed or restricted air flow to air cylinder. Check all air
lines for kinks. bends or damage. Inspect the air lines. reducing
valve. and solenoid assembly. Clean the inversion valve of
excessive grease and dirt.
3. Faulty control module. If the source of the problem was not
located in the previous checks, replace the control module.
1. Defective stop lamp switch or wiring. Test switch and wiring as
specified under 8 following.
2. Defective control module. Replace the control module if the
cause of the trouble was not the stop lamp switch.
1. Coach speed was at or above the top speed set limit or below
the minimum speed setting. The accelerate feature will not
operate below 20 mph (32 kmh) or above the top speed set limit
Testthe accelerate function with a coach set speed of at least 22
mph (35 kmh) but less than 55 mph (88 kmh).
2. System was turned off since the last speed setting. If the Master
Control switch or the cruise control system was turned off, a
speed set must be made before the resume or accelerate func-
tion will operate.
3. Faulty Resume switch or wiring. With system turned on. discon-
nect connector number 1. With Resume switch depressed,
check for
.:4
voe
at socket 2. If power is not detected. check for
power at the Res!Jme switch while it is being depressed. If 24
voe
is present, replace the wiring harness: if not, replacl:l the
resume switch.
4. Defective control module. If the cause of the trouble was not
located in the previous tests, replace the control module.
1. Defective stop lamp switch or wiring. Test switch and wiring as
specified under B following.
2. Faulty control module.
If
the stop lamp switch was found to be in
good condition. replace the control module.