Mazda 6 Service Manual: Dtc table
Note
- Perform the following if the security light stays on:
- If gasoline engine stalls, go to symptom troubleshooting NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES in. (See NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES.)
- If gasoline engine wont start, go to symptom troubleshooting NO.6 CRANKS NORMALLY BUT WILL NOT START in. (See NO.6 CRANKS NORMALLY BUT WILL NOT START.)
- If engine condition is normal but light stays on, inspect for continuity between the following wiring harness and body ground: security light and PCM connector terminal 2W. Repair or replace the wiring harness.
Foreword
Caution
When the engine does not start or stalls and the following DTCs
are not indicated, go to engine symptom troubleshooting.
Note
When the immobilizer system is defective, the engine ...
Dtc b1681
Diagnostic procedure
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Other materials:
Mazda 6 Service Manual: Starter inspection
On-vehicle Inspection
1. Verify that the battery is fully charged.
2. Crank the engine and verify that the starter rotates smoothly without any
noise.
If not, inspect the following.
- Remove the starter and inspect the magnetic switch and the starter.
- Inspect the related wiring har ...
Mazda 6 Service Manual: Procedures for determining the location of a malfunction
System Wiring Diadram
PCM
1. Check the display of DTC U0121 and/or U0155, using the SST (WDS or
equivalent). (See DTC TABLE.)
2. Referring to the following table, determine the malfunctioning part of the
CAN system.
ABS/TCS HU/CM or DSC HU/CM
1. Accec and monitor the PCM MSG and IC MSGo ...