Mazda CX-7 2007 Workshop Manual page 1424

SYMPTOM TROUBLESHOOTING [INSTRUMENT CLUSTER]
STEP
• Inspect the DTC for the instrument cluster
3
ON-BOARD DIAGNOSTIC SYSTEM.
• Has DTC U2023 been recorded in memory?
• Inspect the brake fluid level sensor, parking
4
brake switch or connectors.
• Is there any malfunction?
• Disconnect the negative battery cable.
5
• Measure the resistance between the DLC-2
terminals F and E.
• Is the resistance 54— 66 ohms?
• Disconnect the negative battery cable.
6
• Inspect the DLC-2 terminals F and E for
short to power supply or GND.
• Is there any malfunction?
• Turn the ignition switch off.
7
• Inspect the instrument cluster connector
terminals for poor connection (such as
damaged/pulled-out pins, and corrosion).
• Are the terminals normal?
• Disconnect the negative battery cable.
8
• Measure the resistance between the
instrument cluster connector terminals 2R
and 2T.
• Is the resistance 114— 126 ohms?
2W 2U 2S 2Q 2O
2X 2V 2T 2R 2P
End Of Sie
NO. 6 INSTRUMENT CLUSTER ILLUMINATION DOES NOT ILLUMINATE[INSTRUMENT CLUSTER]
6 Instrument cluster illumination does not illuminate
• Instrument cluster malfunction
POSSIBLE
• Connector or pin malfunction
CAUSE
• Fuse malfunction
Diagnostic procedure
STEP
• Turn the light switch to the TNS position.
1
• Does the instrument cluster illumination turn
on?
• Does the non-illumination include the entire
2
instrument cluster?
• Inspect the ROOM and ILLUMI fuse.
3
• Are the fuses normal?
• Turn the ignition switch off.
4
• Inspect the instrument cluster connector
terminals for poor connection (such as
damaged/pulled-out pins, and corrosion).
• Are the terminals normal?
End Of Sie
09-03C–6
INSPECTION
2M 2K 2I 2G 2E 2C 2A
2N 2L 2J 2H 2F 2D 2B
INSPECTION
Yes Inspect the DTC for the DSC HU/CM.
(See 04-02-3 ON-BOARD DIAGNOSIS.)
No Go to the next step.
Yes Repair or replace malfunctioning part.
No Go to the next step.
Yes Go to the next step.
No Go to Step 7.
Yes Inspect the wiring harness and CAN system-related module.
Repair or replace the malfunctioning part.
No Replace the instrument cluster.
Yes Go to the next step.
No Repair or replace the terminal.
Yes Inspect the wiring harness and CAN system-related module.
Repair or replace the malfunctioning part.
No Replace the instrument cluster.
Yes Troubleshooting completed.
No Go to the next step.
Yes Go to the next step.
No Replace the instrument cluster.
Yes Go to the next step.
No Replace the fuse.
• If the fuse is melted, inspect the wiring harness for short
to ground. Repair or replace the wiring harness, then
replace the fuse.
Yes Replace the instrument cluster.
No Repair or replace the terminal.
ACTION
id0903d5807900
ACTION