TROUBLESHOOTING [ENGINE CONTROL FS]
STEP
INSPECTION
ACTION
4
CHECK COOLING FAN CONTROL SIGNAL
OR CONDENSER FAN CONTROL SIGNAL
CIRCUIT FOR SHORT TO GROUND
• Key off.
• Disconnect NGS tester from DLC.
• Appropriate fan relay disconnected.
• PCM disconnected.
• Install breakout box. Leave PCM
disconnected.
• Measure resistance between appropriate
fan circuit Test Pin 45 (cooling fan control
signal) or 17 (condenser fan control signal)
and Test Pin 51, 103 and 91 at breakout
box.
•
is each resistance greater than 10,000
ohms?
Yes
Go to next step.
No
SERVICE fan control circuit for short to ground.
REMOVE breakout box.
RECONNECT all components.
RERUN OBD Test.
5
CHECK COOLING FAN CONTROL SIGNAL
OR CONDENSER FAN CONTROL SIGNAL
CIRCUIT RESISTANCE
• Key off.
• Appropriate fan control relay disconnected.
• Breakout box installed.
Yes
REPLACE PCM.
REMOVE breakout box.
RECONNECT all components.
RERUN OBD test.
• PCM disconnected.
• Measure resistance between appropriate
fan control circuit Test Pin45 (cooling fan
control signal) or 17 (condenser fan control
signal) at breakout box and at appropriate
fan relay vehicle harness connector.
• Is resistance less than 5.0 ohms?
No
SERVICE open cooling fan relay control or condenser fan
relay control circuit.
REMOVE breakout box.
RECONNECT all components.
RERUN OBD Test.
0 1 -0 1 A - 1 09
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...