TROUBLESHOOTING [ENGINE CONTROL KL]
STEP
INSPECTION
ACTION
10
CHECK CONTINUITY OF POWER CIRCUIT
CIRCUIT
• Key off.
• MAF sensor disconnected.
• Disconnect PCM. Inspect for damaged or
pushed out pins, corrosion, loose wires,
etc. Service as necessary.
• Install breakout box. Leave PCM
disconnected.
• Measure resistance between MAF sensor
connector and Test Pin 71 or 97 at
breakout box.
• Is resistance less than 5.0 ohms?
Yes
Power harness circuit to PCM is okay.
Go to next step.
No
Service open in power harness circuit.
REMOVE breakout box.
RECONNECT all components.
RESET PCM to completely clear DTCs.
¡y
After Repair Procedure
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
11
CHECK MAF SENSOR CIRCUIT FOR
SHORTS TO GROUND CIRCUIT AND PCM
GROUND CIRCUIT
• Key off.
• MAF sensor disconnected.
• Breakout box installed.
• PCM disconnected.
• Disconnect NGS tester from DLC.
• Measure resistance between Test Pin 88
and Test Pins 36 and 24 or 103 at breakout
box.
•
Is each resistance greater than 10,000
ohms?
Yes
MAF signal circuit, PCM ground circuit and ground circuit
harness circuits to PCM are okay.
RECONNECT NGS tester.
Go to next step.
No
Service short circuit between MAF signal circuit and
ground circuit or PCM ground circuit.
REMOVE breakout box.
RECONNECT all components.
RESET PCM to completely clear DTCs.
cr
After Repair Procedure
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
12
CHECK PCM GROUND CIRCUIT (BETWEEN
PCM AND MAF SENSOR GROUND
CIRCUIT) FOR SHORT TO GROUND
CIRCUITS.
• Key off.
• MAF sensor disconnected.
• Breakout box installed.
• PCM disconnected.
• NGS tester disconnected from DLC.
• Measure resistance between Test Pin 36
and Test Pin 51 or 103 at breakout box.
•
Is each resistance greater than 10,000
ohms?
Yes
RECONNECT NGS tester.
Go to next step.
No
SERVICE short circuit between MAF signal circuit and
ground circuit.
REMOVE breakout box.
RECONNECT all components.
RESET PCM to completely clear DTCs.
xt
After Repair Procedure
COMPLETE OBD II Drive Mode.
13
CHECK CONTINUITY OF MAF SIGNAL
CIRCUIT
• Key off.
• MAF sensor disconnected.
• Breakout box installed.
• PCM disconnected.
• Measure resistance between MAF sensor
vehicle harness connector and Test Pin 88
at breakout box.
•
Is resistance less than 5.0 ohms?
Yes
MAF signal harness circuit to PCM is okay.
Go to next step.
No
SERVICE open in MAF signal harness circuit.
REMOVE breakout box.
RECONNECT all components.
RESET PCM to completely clear DTCs.
tt
After Repair Procedure
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
14
CHECK GROUND CIRCUIT TO MAF
SENSOR
• Key off.
• MAF sensor disconnected.
• Breakout box installed.
• PCM connected to breakout box.
• Key
on,
engine
off.
• Measure voltage between power circuit
and ground circuit at MAF sensor vehicle
harness connector.
• Is voltage greater than 10.5 volts?
Yes
Ground harness circuit from battery negative post to MAF
sensor is okay.
Go to step 4.
No
Go to step 3.
01-01B-96
Summary of Contents for MX-6 1998
Page 1: ......
Page 501: ...STARTING SYSTEM 3 If not as specified replace the starter interlock switch 01 19 3...
Page 803: ...MANUAL TRANSAXLE W 6 U 5 1 5 W A C 05 15 7...
Page 934: ...CONTROL SYSTEM CONTROL SYSTEM STRUCTURAL VIEW W6U740WA0 07 40 2...
Page 983: ...SERVICE TOOLS 08 60 SERVICE TOOLS 08 RESTRAINTS S S T 08 60 1 08 RESTRAINTS SST 08 60 1...