Mazda 6 Service Manual: No.6 cranks normally but will not start

No.5 engine stalls-after start/at idle

No.7 slow return to idle

Other materials:

Mazda 6 Service Manual: Dtc b1318
Caution When attaching the tester lead to the ABS (ABS/TCS) HU/CM harness connector, the SST (49 G066 001) must be used. (See ABS (ABS/TCS) HU/CM INSPECTION.) Diagnostic procedure ...

Mazda 6 Service Manual: Engine disassembly/assembly
1. Disconnect the engine and automatic transaxle. (ATX) (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION.) 2. Disconnect the engine and manual transaxle. (MTX) (See MANUAL TRANSAXLE REMOVAL/INSTALLATION.) 3. Remove the intake-air system. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.) 4. Remove ...