Mazda MX-6 1998, Руководство по ремонту

Страница: 706 / 1282

TROUBLESHOOTING [LA4A-EL]
STEP
INSPECTION ACTION
DP3
CHECK VEHICLE SPEEDOMETER SENSOR
RESISTANCE
• Key off.
• VSS disconnected.
• Measure the resistance of the VSS.
Is resistance between 190 and 250 ohms?
Yes Remove breakout box.
Replace the PCM.
Reconnect the VSS.
Run VSS drive cycle in DP5 to verify repair.
No
Replace the VSS.
Remove breakout box.
Reconnect the PCM.
Run VSS drive cycle in DP5 to verify repair.
DP4 VEHICLE SPEEDOMETER SENSOR DRIVE
CYCLE TEST
• Warm engine to operating temperature.
• Perform the VSS drive cycle at least three
times as outlined below:
AUTOMATIC TRANSAXLE:
• Place gear selector in DRIVE range.
• Obey all local traffic laws.
• Accelerate heavily to 35 mph.
• Coast down to an idle and stop the vehicle.
• Shut the engine off.
• After the drive cycle is completed, retrieve and
record any continuous memory DTCs. Address
the DTCs in Section 5, powertrain diagnostic
trouble code charts.
• If no DTCs are generated, testing is complete.
Solenoid Body Connector Component
Vehicle harness connector pin locations
Pin Description PCM Test Pin
1
Transaxle fluid temperature
(TFT) signal
37
2 Sensor ground circuit 91
3
TCC power circuit 7 1 ,9 7
4 TCC signal circuit
54
5
Shift solenoid No.2 (SS2)
signal circuit
1
6
Solenoid power circuit 71, 97
7
Shift solenoid No.1 (SS1)
signal circuit
27
8
3 -2 timing/coasting clutch
solenoid (3-2T/CC S) signal
circuit
102
9
Electrical pressure control
(EPC) power circuit
71, 97
10
Electrical pressure control
(ECP) signal circuit
81
Transaxle Range (TR) Switch Connector
Component
Vehicle harness connector pin locations
Pin
Circuit Function
1 Main relay
2 Not used
3 Backup Lamp Output
4 Starter
5 Sensor ground circuit
6 NOT USED
7 Not used
8 Not used
9
Ignition switch
10 Transaxle range switch
11 NOT USED
W 6 U 5 0 1 W A 7
0 5 -0 1 A -31