TROUBLESHOOTING
STEP
INSPECTION
RESULTS
ACTION
3
Turn ignition switch off.
Leave TP sensor connector disconnected.
Measure voltage between battery positive
terminal and GND circuit at TP sensor
connector.
Is voltage greater than 10.5 V and within 1.0 V
of battery voltage?
Yes
Go to next step.
No
Go to Step 8.
4
Note
• The purpose of this step is to determine if
NGS tester is communicating with PCM.
Turn ignition switch on.
Attempt to access ECT PID.
Can ECT PID be accessed?
Yes
Go to Step 7.
No
Go to next step.
5
Turn ignition switch off.
Leave TP sensor connector disconnected.
Disconnect PCM connector.
Turn ignition switch on.
Measure voltage between PCM connector
terminals 71, 97 and 24.
Is voltage greater than 10.5 V?
Yes
Go to next step.
No
Repair open circuit between PCM terminal 71,
97 and main relay.
6
Leave TP sensor and PCM connectors
disconnected.
Disconnect NGS tester from DLC.
Measure resistance between PCM connector
terminals 24 and 91.
Is resistance greater than 10,000 Q?
Yes
Inspect constant voltage at TP sensor connector
again.
If constant voltage is still out of range, replace
PCM.
No
Repair constant voltage circuit short to GND.
7
Turn ignition switch off.
Leave TP sensor disconnected.
Disconnect PCM connector.
Measure resistance between PCM connector
terminal 31 and constant voltage circuit at
appropriate sensor connector.
Is resistance less than 5.0 Q?
Yes
Inspect constant voltage at TP sensor connector
again.
If constant voltage is still out of range, replace
PCM.
No
Repair open constant voltage circuit.
8
Note
• The purpose of this step is to determine if
NGS tester is communicating with PCM.
Reconnect TP sensor connector.
Turn ignition switch on.
Attempt to access ECT PID.
Can ECT PID be accessed?
Yes
Go to next step.
No
Goto Step 11.
9
Are DTCs present for two or more sensors
connected to PCM terminal 90?
Sensor connected to PCM terminal 90:
• TP sensor (P0120)
• ECT sensor (P0115)
• I AT sensor (P0110)
• H02S (P0134, P1170)
Yes
Go to next step.
No
Repair open GND circuit to sensor where
constant voltage circuit inspection failed.
10
Turn ignition switch off.
Disconnect NGS tester from DLC.
Disconnect PCM connector.
Measure resistance between GND circuit at
appropriate sensor connector and PCM
connector terminal 90.
Is resistance less than 5.0 Q?
Yes
Reconnect sensor connector.
Go to appropriate DTC test.
No
Repair open GND circuit.
11
Turn ignition switch off.
Disconnect PCM connector.
Measure resistance between battery negative
terminal and PCM terminals 24, 51, 76, 77 and
103.
Is each resistance less than 5.0 Q?
Yes
Go to next step.
No
Repair open GND circuit.
F1-143
Summary of Contents for 626 Station Wagon
Page 25: ...CONTROL SYSTEM WIRING DIAGRAM With Immobilizer System OUTLINE F1 4 ...
Page 183: ...CONTROL SYSTEM COMPONENT LOCATION F2 7 ...
Page 204: ...MANUAL TRANSAXLE FEATURES OUTLINE J 2 OUTLINE OF CONSTRUCTION J 2 SPECIFICATIONS J 2 D J 1 ...
Page 266: ...SHIFT MECHANISM 6 Apply grease to the cam as shown K2 59 ...
Page 418: ...TROUBLESHOOTING KEYLESS ENTRY SYSTEM ON BOARD DIAGNOSTIC FUNCTION S 37 ...
Page 454: ...WARNING AND INDICATOR SYSTEM O p e ra tin g O rd e r T 32 ...