Diagnosis Procedure
Regarding Wiring Diagram information, refer to PCS "Wiring Diagram".
1. CHECK FUSE AND FUSIBLE LINKS
Check that the following IPDM E/R fuse or fusible links are not blown.
Is the fuse blown?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2
2. CHECK BATTERY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R.
3. Check voltage between IPDM E/R connectors and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between IPDM E/R connectors and ground.
Does continuity exist?
YES >> Inspection End.
NO >> Repair or replace harness.
REMOVAL AND INSTALLATION
B2099 Ignition relay off stuckDescription The ignition relay integrated in IPDM E/R is operated with ignition switch ON signal from the ignition switch. DTC Logic DTC DETECTION LOGIC Diagnosis Procedure 1. PERFORM SELF ...

Removal and Installation CAUTION: IPDM E/R integrated relays are not serviceable parts and must not be removed from the unit. REMOVAL 1. Disconnect the battery negative terminal. Refer to PG-6 ...
A/T Control system
A/T Control system : component parts location
1. IPDM E/R 2. TCM 3. Transmission range switch
4. A/T unit 5. Output speed sensor 6. Stop lamp switch
7. A/T shift selector 8. Overdrive control switch 9. Combination meter (type B)
A/T Control system : component description
Name
...
P2858 Clutch B pressure
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P2858
Clutch B pressure engagement
performance
The auxiliary gearbox gear ratio is 2.232 or
more for the auxiliary gearbox 2GR ratio continuously
for 5 seconds ...