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Mazda 626 - DTC P1627 (Except for GF4 A-EL Models);Diagnostic Procedure

Mazda 626
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ON-BOARD DIAGNOSTIC
STEP INSPECTION
ACTION
4 VERIFY TROUBLESHOOTING OF DTC P1624
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from memory using NGS tester.
• Turn ignition key to OFF, then start engine.
• Is same DTC present?
Yes Replace PCM, then go to next step.
No Go to next step.
5
VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure.”
(See F1 36 AFTER REPAIR PROCEDURE)
• Are any DTCs present?
Yes
Go to applicable DTC inspection.
(See F1 -37 DTC TABLE)
No
Troubleshooting completed.
DTC P1627
Except for GF4A-EL Models
DTC P1627 PCM/TCS line—communication error
DETECTION
CONDITION
No pulse signal is input to PCM, or pulse shape is abnormal when vehicle is driven above 5.6 km/h
{3.7 mph}.
POSSIBLE
CAUSE
ABS/TCS HU/CM malfunction
Open circuit or short to GND in wiring from ABS/TCS HU/CM terminal L to PCM terminal 11.
ABS/TCS HU/CM
PCM
ABS/TCS HU/CM
HARNESS SIDE CONNECTOR
(VIEW FROM HARNESS SIDE)
11
PCM
i" i r1i1r1TI i 11 ''i t 111 piV r 1!'111H I [ 111’1111111111
n 1!11111 i 111 !111 i11'i1 i1? p-t1!-1 Il;1; 1 ; 1 ;1 ;1 ;111 i i ^ j
HARNESS SIDE CONNECTOR
(VIEW FROM TERMINAL SIDE)
F1-91

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