Mazda 6 2002 Workshop Manual page 256

Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has FREEZE FRAME DATA been recorded?
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Check for related Service information
availability.
• Is any related Service information available?
3 CLASSIFY HIGH INPUT OR LOW INPUT
• Connect WDS or equivalent to DLC-2.
• Access CPP PID.
• Verify CPP PID during clutch pedal operation.
• Is CPP PID always OFF?.
4 INSPECT CLUTCH SWITCH CONNECTOR FOR
POOR CONNECTION
• Turn ignition switch to OFF.
• Disconnect clutch switch connector.
• Inspect for poor connection (damaged/pulled-
out terminals, corrosion, etc.).
• Is there malfunction?
5 CLASSIFY CLUTCH SWITCH OR CIRCUIT
• Connect WDS or equivalent to DLC-2.
• Access CPP PID.
• Connect a jumper wire between clutch switch
terminal B and D.
• Is CPP PID on?
6 INSPECT CLUTCH SWITCH
• Perform clutch switch inspection.
(See F–59 CLUTCH SWITCH
• Is clutch switch okay?
7 INSPECT CLUTCH SWITCH GROUND CIRCUIT
FOR OPEN CIRCUIT
• Inspect continuity between clutch switch
terminal D and ground.
• Is there any continuity?
8 INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Turn ignition switch to OFF.
• Disconnect PCM connector.
• Inspect for poor connection (damaged/pulled-
out terminals, corrosion, etc.).
• Is there malfunction?
9 INSPECT CLUTCH SWITCH SIGNAL CIRCUIT
FOR OPEN CIRCUIT
• Inspect continuity between clutch switch
terminal B and PCM terminal 1R.
• Is there any continuity?
10 INSPECT CLUTCH SWITCH CONNECTOR FOR
POOR CONNECTION
• Turn ignition switch to OFF.
• Disconnect clutch switch connector.
• Inspect for poor connection (damaged/pulled-
out terminals, corrosion, etc.).
• Is there malfunction?
11 CLASSIFY CLUTCH SWITCH OR CIRCUIT
• Connect WDS or equivalent to DLC-2.
• Access CPP PID.
• Verify that CPP PID changes from ON to OFF
when clutch switch connector disconnected.
• Does CPP PID change from ON to OFF?
12 INSPECT CLUTCH SWITCH
• Perform clutch switch inspection.
(See F–59 CLUTCH SWITCH
• Is clutch switch okay?
ON-BOARD DIAGNOSTIC
INSPECTION
INSPECTION.)
INSPECTION.)
Yes Go to net step.
No Record FREEZE FRAME DATA on repair order, then go to
net step.
Yes Perform repair or diagnosis according to available Service
information.
• If vehicle is not repaired, go to net step.
No Go to net step.
Yes Go to Net step.
No Go to Step 10.
Yes Repair or replace terminal, then go to Step 14.
No Go to net step.
Yes Go to net step.
No Go to Step 7.
Yes Go to Step 14.
No Replace clutch switch, then go to Step 14.
Yes Go to net step.
No Repair or replace clutch switch power circuit for open, then
Go to Step 14.
Yes Repair or replace terminal, then go to Step 14.
No Go to net step.
Yes Repair or replace harness for open, then go to Step 14.
No Go to Step 14.
Yes Repair or replace terminal, then go to Step 14.
No Go to net step.
Yes Go to net step.
No Go to Step 13.
Yes Go to Step 14.
No Replace clutch switch, then go to Step 14.
ACTION
F–159
F