496-497 / 654
ENGINE
DTC
DESCRIPTION
CAUSE
DIAGNOSTIC
LAMP (
MIL
)
DIAGNOSTIC
LAMP (
CEL
)
Gil When
Driven In CNG
PROBABLE TROUBLE AREA
P0650
Check MIL Lamp
open/short circuit
error
Open/short circuit
Error
OFF
ON
ON
1. Loose or damaged connections.
P0652
Sensor 2 (MAP
sensor) Reference
voltage supply
short to ground
Short Circuit to
Ground
ON
OFF
ON
1) Loose/ Damaged Connections.
2) Faulty Sensor.
3) Faulty ECU.
P0653
Sensor 2 (MAP
sensor) Reference
voltage supply
short to battery
Short Circuit to
Battery
ON
OFF
ON
P0686
Main relay
response slow
Sticky main relay
OFF
ON
ON
1. Check relay control pin short to ground
2. Check Main relay
P0691
Radiator Fan
short to ground
Short Circuit to
Ground
OFF
ON
(Blinking)
ON
1) Loose/ Damaged Connections.
2) Relay supply line Short circuit to Battery/ Ground.
3) Relay Control line Short circuit to Battery/ Ground.
4) Check the continuity from Radiator Fan Relay connector pin to the ECU pin 141.
5) Check for back out of pins at ECU connector.
6) Faulty Radiator Fan Relay.
7) Faulty ECU
P0692
Radiator Fan
short to battery
Short Circuit to
Battery
OFF
ON
(Blinking)
ON
P0695
Condenser Fan
short to ground
Short Circuit to
Ground
OFF
OFF
ON
1) Loose/ Damaged Connections.
2) Relay supply line Short circuit to Battery/ Ground.
3) Relay Control line Short circuit to Battery/ Ground.
4) Check the continuity from Condenser Fan Relay connector pin to the ECU pin 140.
5) Check for back out of pins at ECU connector.
6) Faulty Condenser Fan Relay.
7) Faulty ECU
P0696
Condenser Fan
short to battery
Short Circuit to
Battery
OFF
OFF
ON
P1093
Fuel System Leak
detected( Large
Leak )
Leakage on Low
Pressure side
OFF
ON
(Blinking)
ON
1)CNG Pressure in the Rail, drops too quickly
2) Faulty Pressure Regulator
3) Faulty or Leaky Injector.
4) Check Hose connection between PR Valve and Rail.