Diagnostic procedure
STEP
|
INSPECTION
|
RESULTS
|
ACTION
|
---|---|---|---|
1
|
Yes
|
Inspect advanced keyless entry system and repair or replace according to inspection result.
|
|
No
|
Go to the next step.
|
||
2
|
Connect the WDS or equivalent to the DLC-2.
Do the following conditions appear?
• The engine is not completely started.
• DTC B1681 is displayed.
|
Yes
|
Both conditions appear:
Go to Step 5.
|
No
|
Either or other condition appears:
Go to the next step.
|
||
3
|
Turn the ignition switch to the ON position.
Is the coil connector securely connected to the coil?
|
Yes
|
Go to the next step.
|
No
|
Connect the coil connector securely.
Return to Step 2.
|
||
4
|
Does the security light flush?
|
Yes
|
Go to the next step.
|
No
|
Inspect instrument cluster and wiring harness.
|
||
5
|
Connect the WDS or equivalent to the DLC-2 and retrieve DTC.
DTC
B1213, B1342, B1600, B1601, B1602, B1681, B2103, B2431, |
Yes
|
Go to appropriate DTC inspection.
(See DTC TABLE [L8, LF, L3].)
|
No
|
Go to the next step.
|
||
6
|
Is there continuity between PCM GND terminals 1AZ, 1BB, 1BD, 1BH and GND?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace for open circuit.
|
||
7
|
Measure voltage between PCM GND terminals 1AZ, 1BB, 1BD, 1BH and coil terminal C.
Is the voltage below 1.0V?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace for short to power.
|
||
8
|
Turn ignition switch to ON.
Access VPWR PID using the WDS or equivalent.
Is the VPWR PID value okay?
Specification Battery voltage |
Yes
|
Go to the next step.
|
No
|
Repair or replace for open circuit between PCM terminal 1BE and battery positive post.
|
||
9
|
Disconnect the coil connector.
Turn ignition switch to ON.
Measure the voltage between coil connector terminal D (harness-side) and GND.
Is there battery voltage?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace wiring harness between coil connector terminal D and fuse panel.
|
||
10
|
Disconnect the PCM connector with the coil connector disconnected.
Is there continuity between following circuits?
• Coil terminal A and PCM terminal 1F
• Coil terminal B and PCM terminal 1E
|
Yes
|
Go to the next step.
|
No
|
Repair or replace open circuit.
|
||
11
|
PCM and coil connectors disconnected.
Is there continuity between following terminals and GND?
• Coil terminal A (harness-side)
• Coil terminal B (harness-side)
|
Yes
|
Repair or replace for short to GND.
|
No
|
Go to the next step.
|
||
12
|
PCM and coil connectors disconnected.
Measure voltage between following terminals
and GND.
• PCM terminal 1F (harness-side)
• PCM terminal 1E (harness-side)
Is the voltage below 1.0V?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace for short to power.
|
||
13
|
Is there continuity between PCM terminal 1B and starter relay with P or N position (ATX)?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace wiring harness.
|
||
14
|
Inspect the following:
• Battery connection
• Battery condition
• Transaxle is in Park or Neutral. (ATX)
• Clutch is fully depressed. (MTX)
• Fuses
Are all items normal?
|
Yes
|
Go to the next step.
|
No
|
Service if necessary.
Repeat Step 14.
|
||
15
|
Is clicking sound heard from starter when the ignition switch is turned to START?
|
Yes
|
Go to the next step.
|
No
|
Go to Step 17.
|
||
16
|
Inspect the starting system.
Is starting system normal?
|
Yes
|
Inspect for seized/hydrolocked engine, flywheel or drive plate.
(See FLYWHEEL INSPECTION.)
|
No
|
Repair or replace components if required.
|
||
17
|
Do any other electrical accessories function?
|
Yes
|
Go to the next step.
|
No
|
Inspect the charging system.
|
||
18
|
Yes
|
Go to the next step.
|
|
No
|
Inspect adjustment of TR switch.
If TR switch is adjusted properly, inspect for open circuit between TR switch and TCM terminal 2H or starter.
|
||
19
|
Connect the WDS or equivalent to the DLC-2.
Turn the ignition switch to the ON position (Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?
|
Yes
|
DTC is displayed:
Go to appropriate DTC inspection.
(See DTC TABLE [L8, LF, L3].)
Communication error message is displayed:
Inspect for the following:
• Open circuit in wiring harness between main relay and PCM terminal 1BE
• Open circuit in wiring harness between main relay terminal E and PCM terminal 1Q
• Main relay is stuck open.
• Open or short circuit in wiring harness between DLC and PCM terminals 1AM or 1AI
• Open or poor GND circuit (PCM terminal 1AZ,1BB,1BD,1BH)
• Poor connection of vehicle body GND
|
No
|
No DTC is displayed:
Inspect the following:
• START circuit in ignition switch
• Open circuit in wiring harness between ignition switch and starter
|
||
20
|
• Verify test results.
|