No.3 Will Not Crank - Mazda CX-7 2007 Workshop Manual

SYMPTOM TROUBLESHOOTING [L3 WITH TC]
NO.3 WILL NOT CRANK[L3 WITH TC]
3 WILL NOT CRANK
DESCRIPTION Starter does not work.
• Open starter circuit between the ignition switch and the starter
• Low or dead battery
• Charging system malfunction
• Starter malfunction
• TR switch misadjustment
POSSIBLE CAUSE
• P/N position switch in TR switch open
• Seized/hydro-locked engine, flywheel
• Immobilizer system and/or related circuit malfunction
• Immobilizer system operates properly (Key is not registered.)
• Advanced keyless entry system malfunction
Diagnostic procedure
STEP INSPECTION
1 Note
• The following test should be performed on
the advanced keyless entry system. If not
equipped, go to the next step.
Start the engine using the standard ignition key.
Does the engine start?
2 Connect the M-MDS to the DLC-2.
Do any of the following conditions appear?
• Engine does not complete start.
• DTC B1681 is displayed.
3 Is the coil connector securely connected to the
coil?
4 Does the security light illuminate?
5 Retrieve DTCs using the M-MDS. Are any of the
following DTCs present?
DTC B1213, B1342, B1600, B1601, B1602,
B1681, B2103, B2431
6 Is there continuity between PCM terminal 1BD,
1AZ, 1BH and ground?
7 Turn the ignition switch to the ON position
(Engine off.)
Measure voltage between PCM terminal 1BD,
1AZ, 1BH and ground.
Is the voltage below 1.0V?
8 Turn the ignition switch to the ON position.
(Engine off)
Access the VPWR PID.
Is the VPWR PID normal?
VPWR PID
Battery voltage
9 Disconnect the coil connector.
Turn the ignition switch to the ON position.
(Engine off)
Is there battery voltage at coil connector terminal
D?
Revised 10/2006 (Ref. No. R144/06)
2007 Mazda CX-7 Workshop Manual (1871–1U–06B)
RESULTS
Yes Inspect the advanced keyless entry system and repair
or replace according to the inspection result.
No Go to the next step.
Yes Both conditions are appear:
Go to Step 6.
No Either or other condition appears:
Go to the next step.
Yes Go to the next step.
No Connect the connector securely, retest from Step 2.
Yes Go to the next step.
No Inspect and repair or replace the following:
• Instrument cluster
(See09-22-3 INSTRUMENT CLUSTER
INSPECTION.)
With advanced keyless entry system
• Between keyless CM 3X and instrument cluster 2R
• Between keyless CM 3W and instrument cluster 2T
Without advanced keyless entry system
• Between PCM 1AM and instrument cluster 2R
• Between PCM 1AI and instrument cluster 2T
Yes Go to the appropriate DTC test.
(See09-02B-3 DTC TABLE[IMMOBILIZER SYSTEM
(ADVANCED KEYLESS SYSTEM)].)
No Advanced keyless entry system is not equipped:
Go to the next step.
Advanced keyless entry system is equipped:
Go to Step 11.
Yes Go to the next step.
No Repair or replace the wiring harness.
Yes Go to the next step.
No Repair or replace the wiring harness.
Yes Go to the next step.
No Repair or replace the wiring harness.
Yes Go to the next step.
No Repair or replace the wiring harness between coil
connector terminal D and the fuse panel.
id010339800900
ACTION
01-03–17
01-03