Suzuki GRAND VITARA JB416, Service Manual

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Cruise Control System: 10A-5
Diagnostic Information and Procedures
Cruise Control System Symptom Diagnosis
S5JB0EA104001
NOTE
• ECM uses TCM, ABS or ESP
®
control module and CAN communication to transmit and receive data
for cruise control. Therefore, check that no DTC is detected from ECM, TCM, ABS or ESP
®
control
module before performing this Cruise Control System Symptom Diagnosis. If DTC is detected,
correct trouble indicated by that DTC first.
• Check each part in the order from the top of the following list.
Condition Possible cause Correction / Reference Item
CRUISE or SET indicator
lamp does not turn ON or
OFF MAIN (ON/OFF) switch faulty Check MAIN (ON/OFF) switch for function
referring to “Cruise Control Switch Inspection:
in related manual”.
SET/COAST switch faulty Check SET/COAST switch for function
referring to “Cruise Control Switch Inspection:
in related manual”.
Stop (brake) lamp switch faulty Check stop (brake) lamp switch for function
referring to “Stop (Brake) Lamp Switch
Inspection: in related manual”.
Wiring or grounding faulty Repair.
Combination meter faulty Replace.
ECM faulty Replace after making sure that none of above
parts is faulty.
Vehicle speed can not be
set MAIN (ON/OFF) switch faulty Check MAIN (ON/OFF) switch for function
referring to “Cruise Control Switch Inspection:
in related manual”.
SET/COAST switch faulty Check SET/COAST switch for function
referring to “Cruise Control Switch Inspection:
in related manual”.
Stop (brake) lamp switch faulty Check stop (brake) lamp switch for function
referring to “Stop (Brake) Lamp Switch
Inspection: in related manual”.
CPP switch faulty (M/T model) Check CPP switch for function referring to
“Clutch Pedal Position (CPP) Switch (for
Cruise Control) Inspection and Adjustment: in
related manual”.
Wiring or grounding faulty Repair.
ECM faulty Replace after making sure that none of above
parts is faulty.
Acceleration or
deceleration is not
available by using RES/
ACC or SET/COAST
switch RES/ACC or SET/COAST switch faulty Check RES/ACC or SET/COAST switch for
function referring to “Cruise Control Switch
Inspection: in related manual”.
Wiring or grounding faulty Repair.
ECM faulty Replace after making sure that none of above
parts is faulty.